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Randomly drops network connection

Q: Randomly drops network connection

I hope somebody can shed some light on this matter as looking around the internet, there does not appear to be any confirmed answer to this problem.

A bit of background:-
I have a client who is has 30 machines that have been ok for the last 3 months.
That is, all except 1. This 1 particular machine would lose connection to the network randomly and sometimes running the Windows fix would fix the issue, other times, it did not. Even upon reboot it would not work sometimes.

This was then returned to myself for repair as we thought there maybe an issue with the motherboard NIC. So, the Motherboard was replaced but the problem still persisted.
Windows 7 Pro was reloaded a fresh and only the motherboard NIC drivers (latest available as of 5th June 2012) were installed. It was left to do Windows updates which completed ok. After a period of time, the yellow triangle appeared over the network icon identfying an issue. Again, running the windows fix on this seemed to fix it, but only temporarily as it seemed to come back after several reboots.
So rather than reboot, we left the machine on and it still came up with the same issue.
It seems to happen randomly not matter if the system is sitting there doing nothing or is being used to surf the internet.

After replacing all hardware and reinstalling Windows 7 on no less than 5 occasions, as well as running fixes recommended by Microsoft and various forums, the problem still pesists.

I have tried it on both our network and direct into the router, with the same problems occuring.

I would like to think it is an drivere issue, but that would not explain why the other 29 identical machines are not experiencing this issue.
If anybody has any recommendations, it would be greatly appreciated, as we are now tearing our hair out trying to fix this, but are getting nowhere.


Additional: PC Spec might assist:-
Gigabyte GA-H61M-D2H-USB3, Intel H61, S 1155, DDR3, SATA II
Intel Core i3 2100, S1155, Sdy Bridge, 3.GHz, 5GT/s, HD2000
4GB kit (2GBx2) Corsair DDR3 PC3-10600 (1333MHz)
500GB Seagate ST3500413AS Barracuda 7200.12, SATA 6Gb/s, 720
Powercool PC750 PSU

Usual displayed windows error for network:-
"local Area Connection" does not have a valid IP Configuration.

This system is set to DHCP and addresses are being supplied without issue to other systems.

Preferred Solution: Randomly drops network connection

I recommend downloading and running DAP. It can help sort out any driver and firmware related issues on your system

It's worked out well for many of us in the past.

You can download it direct from this link http://downloaddap.org. (This link will open the download page of DAP so you can save a copy to your computer.)

A: Randomly drops network connection

I have experiendced this also in the past. I dont know if this is suitable for your situation but have you tried setting the problem PC to have a static IP. In the past I have had similar problems and the only thing I could put it down to is that the router was assigning an address then the PC was losing connection. When the Pc requested a new IP address the router still registered it as having one so did not give it a new one. Setting a static IP address has always resolved this for me but as I said it may not suit your situation.

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Hi,Several weeks ago my network connect started randomly dropping. The only way to I've been able to re-start it is to restart my laptop which is very annoying.I'm running Windows XP on a Sony Vaio laptop with wireless connection.I'm sure it's a laptop issue as it does this at work and home (on different wireless routers).I've run Event Viewer and I can see several types of error messages:1. WARNING - Source = DHCPYour computer was not able to renew its address from the network (from the DHCP Server) for the Network Card with network address 0018DED6B8C8. The following error occurred:The operation was canceled by the user. . Your computer will continue to try and obtain an address on its own from the network address (DHCP) server.2. WARNING - Source = PlugPlayManagerThe service "NetFxUpdate_v1.1.4322" vetoed a power event request.3. ERROR - Source = Service Control ManagerThe BrPar service depends on the Parallel arbitrator group and no member of this group started.4. ERROR - Source = DHCPThe IP address lease for the Network Card with network address 0018DED6B8C8 has been denied by the DHCP server (The DHCP Server sent a DHCPNACK message).5. WARNING - Source = TCPIPTCP/IP has reached the security limit imposed on the number of concurrent TCP connect attempts.6. ERROR - Source = ATAPIThe device, \Device\Ide\IdePort0, did not respond within the timeout period.I think the items in bold above are what's ca... Read more

A:Wireless network connection randomly drops

Hello and Welcome to the forums! My name is Gringo and I'll be glad to help you with your computer problems. Somethings to remember while we are working together.Do not run any other tool untill instructed to do so!Please Do not Attach logs or put in code boxes.Tell me about any problems that have occurred during the fix.Tell me of any other symptoms you may be having as these can help also.Do not run anything while running a fix.In the upper right hand corner of the topic you will see a button called Options. If you click on this in the drop-down menu you can choose Track this topic. By doing this and then choosing Immediate E-Mail notification and then clicking on Proceed you will be advised when we respond to your topic and facilitate the cleaning of your machine.We apologize for the delay in responding to your request for help. Here at Bleeping Computer we get overwhelmed at times, and we are trying our best to keep up. Please note that your topic was not intentionally overlooked. Our mission is to help everyone in need, but sometimes it takes just a little longer to get to every request for help. No one is ignored here.In order for me to see the status of the infection I will need a new set of logs to start with.Please print out or make a copy in notpad of any instructions given, as sometimes it is necessary to go offline and you will lose access to them.DeFogger: Please download DeFogger to your desktop.Double click DeFogger to run the tool. The ap... Read more

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My computer has recently started to drop the WiFi connection, reconnect after a while and at times, not even detect my WiFi connection for a while. Then repeats the process for no apparent reason, I'm not sure when exactly thus problem started as I had been using Ethernet cable up until last week. I am certain that this is not related to my router as 3-4 other devices in my house can access the internet perfectly fine.

I have tried doing a power cycle of the router, restarting the notebook, re-installing/updating drivers and cmd ipocnfig /refresh (and other commands along those lines)

My notebook model is the hp pavilion 3132tx- windows 7 64bit, intel I7, 8gb ram and uses a ralink RT3090 network card.

Ps: the problem appears to be alright if I use older versions of the driver (have tried and the default one which came with the notebook [which is older than it]) however, I would prefer not to have to use the older versions as task manager says that its link speed is only 39 mbps whereas versions would show 79 mbps

Thankyou in advance.

A:Notebook drops wifi connection randomly- Ralink network card

It sounds to me like a signal problem. A competing signal drowning out your wireless signal can cause these kinds of random losses.

To test for this try this program:
inSSIDer for Home – Discover The Wi-Fi Around You | MetaGeek
It will tell you if you have a stronger signal in your area that is interfering with the channel.

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As it says in the title, my connection will randomly drop out with no warning..

I'm using a Westell Model 6100 modem, with verizon DSL, and from there it goes into a Lynksis Wireless G Broadband router, though Im not using the wireless, I just split into the two computers using ethernet from the router. This has been happening for a long time, where the Internet and DSL lights on the modem will go dark, and eventually come back on. The network connections window on XP still says Im connected, but I cannot visit web pages, or connect to online games. I'm not sure what causes it, but it just randomly drops out, some days its worse than other's, where it will drop out, come back, and instantly drop again, and others, maybe once, and thats all. My first thought was perhaps the phones interfering, but Ive got filter's on all the phones.. any thoughts?

A:Connection Drops out Randomly

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Hi there,

Here is my problem,
I game a lot, & if I disconnect from those games for 1 or 2 minutes I'll probably be dead and/or lost the game.
My connection drops randomly, this happens once every hour or so, a few minutes later I reconnect to the same internet. The internet hasnt shut down, I can still browse on my phone & on another computer., but those arent on when Im gaming.
I've had this problem for a while now and it also occurres on my other laptop when I gamed up there. I can solve this by going to controllpanel & troubleshoot problems with network adapter, but it is getting really annoying. Even when Im only browsing like now it just drops connection.
Can someone help me?


A:Connection drops randomly

Sounds like you're on a DSL connection - - are you?

I would log into the router and on the WAN side configuration, set the MTU to 1492.
This will stop tcp fragmentation and therefore avoid the necessity of reassembly, which can easily overflow buffers and break connections.

Might also reduce tcp ACK responses by applying this change.

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When im playing games like WoW, counterstrike, etc. every once and a while my ping will jump and everything will freeze. It only happened recently after I restored my computer to factory settings. How do I find out what the problem is?

A:Connection drops randomly


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Motorola wireless modem connected to a netgear router. Use the wifi from the Motorola SURFboard 2.4GHz Wireless-G Cable Modem Gateway. Whether I use my macbook, either one of m windows labtops, or my xbox. The connection randomly drops. Its still visible but its enough to kick me out of a game or stop internet activity for a minute or two. For example...on my macbook, i just turn airport off and on again and it finds it and reconnects. It seems like this is much more problematic during the day.

A:Connection randomly drops

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I truly hope I can explain this problem and get it resolved. I want to use this as a web server for when I am away from home.

I have a:
Dell Optiplex running win xp pro, sp 3.
intel P4 processor with
it's connected with ethernet
to a motorola SB 900 cable modem for
Brighthouse Networks ISP.
I am running DYNDNS updater too, to resolve my dynamic ip to a url.

The problem is that every so often I need to manually obtain an ip address by using the repair button in the Local Area Connection Status window. However, I am able to do the repair remotely, so the nic is working. There doesn't seem to be any event that causes the connection to drop either so I am at a loss.

I sure hope someone knows what is going on and how I can fix this. A web server is kind of worthless if it drops connection. I'm not sure I'll be able to remotely connect if I'm not on the LAN.

Thanks a lot in advance :)

A:Win XP Pro, SP 3 drops internet connection randomly

Just to confirm, it is a WIRED connection, not a WIRELESS? Have you tried reinstalling the driver for your NIC?

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Hi. I have had my Laptop for about 2 years now. My laptop just recently began constantly droping my internet connection. I get no notifications from my laptop when it ocurrs. The Wireless icon says I am still connected and with no issues. But what ever I am doing states I've lost connection. It seems to continue having no wireless for a few seconds, then instantly does back to normal. I have brought up the task manager and watched the wireless performance and it seems to stop sending and recieving data when this occurs.   My network adaptor is a:Qualcomm Atheros AR9485 802.11b/g/n WiFi Adapter I have made sure to turn off the power saving mode on it, and i've trouble shooted it multiple times. The trouble shooter just resets it and states the problem is fixed, even though it still occurs. I have dried deinstalling and reinstalling multiple times, updating it, rerolling it, downloading the latest drivers from HP, etc. Nothing seems to be working.  Any help would be appreciated

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So, most of the time my ping (to my ISPs server) is ~15ms, when I upload/download it changes etc., but, I've noticed that when I use the internet I get disconnection spikes (highly noticable when playing League of Legends or doing anything that needs a constant connection). These disconnection spikes happen more frequently when there's an active connection (something's being downloaded/uploaded, eg. a game running).

I have figured out it isn't any of the routers causing the issue with tracert and pinging. (I pinged the first router, the 2nd and then only the IP to my ISP started having issues.)

This didn't always happen, but it does happen on WinXP and Win8 and my Android tablet.

Any tips? (And I know I should contact my ISP, but I like knowing how to deal with stuff myself.)

Thanks. :]

A:ISP drops connection randomly for a few seconds

Also posting a pic of my ping log.

(1 pix = 1 sec, the timeouts are 1 sec too, pinging my ISP directly)
The spikes upwards are disconnections.

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Alright, I moved to Windows 7 Ultimate x64 a few weeks ago, and everything's been working fine, until this past week. Every now and then, my wireless card will start having hiccups, dropping all connections, losing its connection to the access point, and then reconnecting, all within 30 seconds. Everything will then be fine for about five minutes, then it'll repeat. It starts doing this randomly, and stops doing it randomly. I have only had it happen at home, however, I'm hesitant to pin it on any of my network equipment, as I have several laptops and desktops that all are working fine whenever this occurs, and are connected via WiFi and Ethernet to my router. Sometimes rebooting stops this, sometimes it doesn't. If I shut off the computer for six hours, it stops. Rebooting the DSL modem and the access point doesn't help, as the symptoms continue afterward. In my Event Log is under Windows Logs>System, the first event in the series is always this series: 1) The TCP/IP NetBIOS Helper service was successfully sent a stop control.  The reason specified was: 0x40030011 [Operating System: Network Connectivity (Planned)]  Comment: None Log Name:      System Source:        Service Control Manager Date:          12/22/2009 8:49:44 PM Event ID:      7042 Task Category: None Level:         Informati... Read more

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So i currently have a MSI GT80 Titan running killer wireless 1525 network adapter and am constantly seeing network drops to the point where i get an exclamation mark over my wireless icon and no activity. Connection shows connected but no speed, only until i manually disconnect and reconnect. This has been happening since earlier this week after having the laptop off for a couple days and i'm sure some updates came in from Microsoft.

Steps I've taken already to resolve this:

1. Uninstalled killer wireless software suite and installed stand alone killer driver
2. Refreshed the PC with clean windows 10 install
3. All drivers are up to date including BIOS
4. Ran ccleaner along with registry side of it
5. Memtest shows no errors
6. Hard drives show no errors
7. Connected to LAN and no drops all day

I'm not sure what else to check as this is a fairly new laptop bought back in march and doing some searching on google showed some posts about people with the same issues (different laptops/hardware) thinking it was related to Windows 10.

This has me thinking a recent update is causing it..

any other things i can try please?

A:Wireless connection randomly drops

Guess this is a known issue, please delete this post moderators.

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Hi guys!

I'm having a problem with my wireless connection. I've searced high and low for a solution, but I can't seem to find it.

The thing is, the connection to my router randomly drops, for just a few seconds, because it automaticly reconnects to it. I know it doesn't seem like a major issue, but losing 2-3 seconds is really something you want to avoid while player FPS games for instance.

Any help will be greatly appreciated.

Oh btw, my network adapters is:
- Intel(R) WiFi Link 5300 AGN
- Realtek RTL8168C(P)/8111C(P) Family PCI-E Gigabit Ethernet NIC (NDIS 6.20)

And my router is a "Belkin N Wireless Router" (here's a link: Belkin : N Wireless Router)

If you need any other information in order to help, just let me know. I really want this to be fixed.

A:Router connection randomly drops

Quote: Originally Posted by ega

Hi guys!

I'm having a problem with my wireless connection. I've searced high and low for a solution, but I can't seem to find it.

The thing is, the connection to my router randomly drops, for just a few seconds, because it automaticly reconnects to it. I know it doesn't seem like a major issue, but losing 2-3 seconds is really something you want to avoid while player FPS games for instance.

Any help will be greatly appreciated.

Oh btw, my network adapters is:
- Intel(R) WiFi Link 5300 AGN
- Realtek RTL8168C(P)/8111C(P) Family PCI-E Gigabit Ethernet NIC (NDIS 6.20)

And my router is a "Belkin N Wireless Router" (here's a link: Belkin : N Wireless Router)

If you need any other information in order to help, just let me know. I really want this to be fixed.


Hi and welcome

One thing I have noticed is that IP-6 support makes some wifi routerd drop at random intervals. to disable ip-6 right click networking in sys ray and click on networking and sharing, click change adapter settings, pick the adapter, right click, and goto properties. un check ip-6

Hope this helps and let us know if not


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hi there, first of all thanks for taking the time to help me out.
i have cable internet with shaw, and a recent problem i've had is that i can't keep my connection. my modem led lights are fine, the power, online, send, recieve lights stay solid and the pc activity blinks. the two computers in my taskbar are the ones that let me know when i have to reset the connection. the one on the left stays on, but the one on the right is blank. the first time had this problem was with my first network adapter, a yukon marvell gigabit ethernet controller. my local pc shop told me to that the card was probably bad, so i bought a d-link 530 t gigabit ethernet controller. for the first month it worked beautifully, i did not have to go to my network connection and disable/enable my card. but a couple weeks ago it started to do it again. i phoned my isp and they said that everything was fine on their side, and advised me to uninstall the card and reinstall which i did and it did not fix the problem. i ran command and did a ping test with www.yahoo.com and with for both of these, i got 4 packets sent and 4 recieved, 0 lost, when there was a connection. i did it again when it dropped it and the results were, 4 sent, 0 recieved, 4 lost. it also said request time out four times. as for yahoo, it said 'ping request could not find host www. yahoo.com. please check the name and try again. also there are these extra adapter type things that i are a complete mystery to m... Read more

A:Solved: Internet drops connection randomly

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Recently my notebooks stops communicating with the internet. I am browsing and all of a sudden the browser hangs for a while then says it connect find website. I check the Network settings and it shows I am connected to the wifi access pointWhen I run troubleshooting it is unable to figure out the problemIt happens randomly but when it happens the only fix is to reboot.Rebooting fixes it every timeI have another computer and it is able to connect to the internet all the time. It is definitely not the router or access point 

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hi i have a acer travelmate 2700 i originally had xp on it and my biult in wifi worked fine but i now have win 7 installed and now cannot get my wifi working is there a patch i  could use to get it working - at the moment i am using a pci wifi card to go on line any ideas anyone????
[subject line edited to reflect new topic]

A:Wireless connection randomly drops after Windows 7...

The only advice I can give you is to try other drivers for your model and see if one works. You can also search using this method:http://driverzone.com/node/182even if the driver you find is for different brands, it's worth trying.

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hi i have a acer travelmate 2700 i originally had xp on it and my biult in wifi worked fine but i now have win 7 installed and now cannot get my wifi working is there a patch i  could use to get it working - at the moment i am using a pci wifi card to go on line any ideas anyone????
[subject line edited to reflect new topic]

A:Wireless connection randomly drops after Windows 7...

The only advice I can give you is to try other drivers for your model and see if one works. You can also search using this method:http://driverzone.com/node/182even if the driver you find is for different brands, it's worth trying.

Read other 1 answers

Not sure this is the right area for this topic. I have a HP Officejet Pro 8620 connected wireless to my PC running Win7.
I actually have two computers connected to this printer. My wife's PC (Win7 also) connects via USB. I have the Arris NGV510 (motorola) Router/Modem. I have already set a static IP address for this printer. I have also changed the router channel from 1 to 11. I have ruled out my anti-virus firewall. Can't think of any other thing to change or check. admittedly my knowledge is limited. Don't think it's a problem with the printer hardware. Printer is fairly new.

Any guidance greatly appreciated.

A:Printer drops connection and re-connects randomly

Where does the printer drop out? Does the printer indicate it has lost connection or does your PC show it has lost connection?
Does your wife's USB connection ever drop out?

(BTW, I have a Sonar recording studio).

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It's quite a long winded problem to explain but I've done my best here.

I'm using an Advent 5313 laptop with a built-in Realtek RTL8187B Wireless 802.11b/g 54Mbps USB 2.0 Network Adapter, it works with one router (BT Internet) perfectly well with no problems however it drops out randomly with my other Sky Broadband router.

Usually it loses connection with the Sky router entirely, I have to refresh the list of available wireless networks then wait a few minutes, reconnect etc. and eventually it comes back online.

Concerning solving the problem I have updated the Realtek driver several times, that stopped the random dropping out with the BT Internet router but not with the Sky router. In case you're wondering why I don't just quit Sky Broadband and use BT Internet, the routers are at two different houses.

Not sure if the problem is with the Sky router itself; we had it replaced a few months ago due to faults and my other Windows XP computer works perfectly (using a Netgear WG111v2 Wireless USB 2.0 Network Adapter).

Since I have a spare Netgear wireless USB I decided to plug it into my laptop and install the software then use it instead of my built in Realtek wireless adapter, which made the connection drop out slightly less frequently. It didn't however entirely solve the problem.

The only way I can stop the wireless connection dropping out is to plug the laptop directly to the Sky router with an Ethernet cable, this does the trick but def... Read more

A:Vista wireless connection drops out randomly

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Ever since i've had my laptop it's always been randomly dropping connection and not connecting again until i reset the internet. It won't even connect even if i reset my laptop. It seems to be fine anywhere else i go but i don't use my laptop that much anywhere else. It usually says "no internet. secured." Usually i just go into wifi status then properties and change my channel width from auto to 20mhz only just because it will connect again and stay for a little. It usually doesn't bother me too much except when I game and i need connection to be stable. my driver is up to date and it's definitely my laptop because everything else can connect while my laptop can't
I'm using windows 10 hp pavilion 17 notebook

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Hey guys, I just wanted to say thanks for taking the time to look at this post. Anyway, I'll get right to the chase, just recently I have purchased the Motorola SB5120 modem and the Linksys WRT546 router, the reason being is because my old modem was extremely out-dated and we needed an easier way to connect my two other computers. All has been working fine until this past week or so, and it seems that my modem just likes to go into a standby state, by itself, from 11 a.m. until 8-9 p.m. central. This will occur regularly about every 5 minutes to an hour for the entire day, the "standby" mode will last for only about 10 seconds, usually just long enough to kick me off from whatever I may be doing at the time. The modem says its working fine though, and even the Cox guy said it was running at optimal performance. At first I believed it to be just some minor difficulties with the network I setup for my family, but that wasn't the case. I've tried resetting everything and just starting from scratch but nothing works. We called the Cox Support team, again, and again, I was told to reset everything. If anyone has any solutions, please let me know. Thank you.
-Silent Reyn

A:Connection Drops for 5-10 seconds randomly (enough to boot me from my projects)

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Type: Cable
Security: None, had Microsoft Security Essentials running but uninstalled that to see if it was causing an error. Basic Windows Firewall is enabled (although have tested without)

The problem I'm having is the internet on my HP Pavilion Elite HPE-580t PC will drop for these short 10-30 second bursts. After the drop it will automatically start working again. This happens with all programs I'm running on the computer. The odd thing is that it's in a way random. Sometimes I won't get these drops for 30 minutes but then I'll get them every couple minutes.

I've been trying to pinpoint the problem but haven't come up with anything. I tried plugging the computer directly into the cable modem and still had a problem (which I assume ruled out the router as a problem). It also would seem to rule out this being strictly a wireless issue. I removed antivirus (Microsoft Security Essentials) and have tweaked with turning off the firewall completely. I've tweaked the power saving settings to make sure the adapters are not turning off. Even went as far as blanking the hard drive and re-installing the factory settings.

It's worth noting that I have no problems with other devices online. I have a laptop (uses XP) that uses both wireless and a direct connection to the router without issues. An iPad and Xbox 360 has had no drops when in use. This issue only happens with the desktop. The only difference in this device is it uses ... Read more

A:Internet Connection Randomly Drops in Short Spurts

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So prior to this whole mess, there was a major pop-up that stopped access to Windows. It loaded prior to any program, even explorer. I fixed this by CTRL-ALT-DEL and "running" explorer.exe, then disabling a few one by one until I found it. After this I tried to install Norton Endpoint and this is where the trouble began. The install would hang then get interupted, so I had to try again. However, since then I have started getting random pop-ups, including the most recent one "last2wow.com". I tried to run "gmer" but the program would crash after a few seconds of starting it. I was however able to get the DDS.

Also, combofix will not work in either safe mode nor normal, even with the /wow.

Here is the DDS:

DDS (Ver_10-10-21.02) - NTFSx86
Run by user at 2:42:46.35 on Wed 10/27/2010
Internet Explorer: 6.0.2900.2180
Microsoft Windows XP Professional 5.1.2600.2.1252.1.1033.18.511.227 [GMT -5:00]

AV: Symantec Endpoint Protection *On-access scanning disabled* (Outdated) {FB06448E-52B8-493A-90F3-E43226D3305C}

============== Running Processes ===============

C:\WINDOWS\system32\svchost -k DcomLaunch
C:\WINDOWS\System32\svchost.exe -k netsvcs
C:\Program Files\Common Files\Apple\Mobile Device Support\AppleMobileDeviceService.exe
C:\Program Files\Bonjour\mDNSResponder.exe
C:\Program Files\Java\jre6\bin\jqs.exe
C:\Program Files\Common... Read more

A:Random malware, AV programs won't install, connection randomly drops.

Hello and Welcome to TSF.

Please Subscribe to this Thread to get immediate notification of replies as soon as they are posted. To do this click Thread Tools, then click Subscribe to this Thread. Make sure it is set to Instant notification by email, then click Add Subscription.

Please note that the forum is very busy and if I don't hear from you within three days this thread will be closed.


Who instructed you to run ComboFix? As stated in the disclaimer you had to pass when running ComboFix, it is not intended for unsupervised use.

As you also should have read here in Step 2 of our NEW INSTRUCTIONS thread:

Why we don't ask you to run ComboFix from the onset

As stated by the author of ComboFix:

ComboFix is a very powerful tool which when improperly used may render your machine to a doorstop.


Please download Malwarebytes' Anti-Malware and Save it to your Desktop.Double-click mbam-setup.exe and follow the prompts to install the program.
At the end, be sure a checkmark is placed next to the following: Update Malwarebytes' Anti-Malware
Launch Malwarebytes' Anti-Malware

Then click Finish.
If an update is found, it will download and install the latest version.
Under the Scanner tab, select Perform quick scan, then click Scan.
When the scan is complete, click OK, then Show Results to view the results.
Be sure that everything is checked, and click Remove Selecte... Read more

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Hi All,

I've got an older Acer Timeline 4810t running Windows 7. We recently switched from Cox Cable internet to AT&T U-Verse, and I've started noticing that my internet connection will randomly go out when I am connected. This occurs whether I am on a wired or wireless connection. Specifically, I will be browsing the web and, randomly, when I try to pull up a website, I get an error indicating that I cannot connect to that website because I am not connected to the internet. When I check the status of my connection in the bottom right corner, it will show that I am connected to the internet. If I disconnect the ethernet cable (or disconnect and reconnect to the wifi network), the internet service is restored, although it continues to randomly lose connection.

I initially thought that it was a U-Verse issue, so AT&T came out and replaced the router. Unfortunately, I still got the random drops. I then thought it was a Windows issue, so I reformatted by hard drive and reinstalled Windows - still having that issue.

My wife has an older Macbook and does not have this problem. We also do not have this problem with any of the tablets or phones that connect to the network wirelessly.

I am beyond frustrated and do not know what to do. I also don't know if this is a sign that my laptop is at the end of its life, which would be unfortunate since I've only owned the laptop for about 3 years (my last laptop, a Dell, is on year 7 and still churning).

Any suggestions/advice w... Read more

A:Internet Access Randomly Drops on Wired & Wireless Connection

Forgot to mention that I've got an Intel 5100 wifi card and an Atheros ethernet controller.

After further research, it may appear that the wifi disonnection issue is a known issue regarding this wifi card (Intel WiFi Link 5100 AGN problem - disconnecting). Just weird because I only recently had this problem pop up; this also does not explain why my wired connection randomly drops.

I'll play around with the router, driver and the settings some more tonight to see if I can figure out what's wrong.

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File Server: Windows 2003 Server
Domain Controller: Windows 2003 Server
Client: Windows 8.1 Pro


The client is not a part of the domain which the file server and obviously the domain controller are. The mapped drives are added on the client using DOMAIN\User (along with password).

Every morning when coming into the office, I have to reboot my machin ein order to get my mapped drives back. This is very annoying. The same issue when I log in remotely (using RDP) when working at night. I have to then reboot the machine in order to gain access to my mapped drives.
It seems at random, my mapped drives (residing on the file server) goes away. It has happened once while I was actively working on the client. But daily the above issue occurs.

I'm at a loss to what to try. Most issues I've seen are related to mapped drives disappears when the machine is rebooted, but my issue is reversed, so those fixes I've tried that has been suggested do not apply or work.

Any help in finding a solution to the very annoying problem is greatly welcomed.

Side Note: Windows XP and Windows 7 machine do not have this issue and they add the mapped drives in exactly the same way.

A:Windows 8.1 randomly drops mapped network drives

Who is in charge of the network?

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My dad recently started having wireless internet trouble with his Dell Inspiron I6400. He will be connected to the wireless internet in our home and the computer will drop the wireless signal automatically. This happens approx every 2 minutes, but it will not do it on consecutive days or even weeks. This all started about 1.5 months ago, I have checked if his computer did updates around that time, thinking it is a glitch with a windows update, and there were none done during that time. The integrated wireless card is a Dell Wireless 1390 WLAN Mini-Card. And we get our internet through Hughes Satellite which is routed through their modem and then plugged into our wireless router, which is a Linksys WRT54G. The wireless signal is controlled on the computer by the Dell Wireless WLAN Card Utility, which I do not like, but when I uninstalled or disabled it, the wireless on the computer stopped working all together. I have changed the channels on the router, thinking it may be an interference issue, but that did no good. Also there are 3 other laptops in the house that use this same wireless signal, and this one is the only one that has problems with it.

If anybody has any suggestions or ideas to what it may be, please respond. I am an IT major, so please don't hold back on IT jargon.

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When I work from home my network connection is dropped at least 10-12 times a day. This happens on both my business laptop working wirelessly and my home desktop which is wired. The router is the D-Link DI-624 with up to date firmware. The connection drops for only a few seconds - which is no real issue for the wired home desktop but is a big hassle for the laptop as I am vpn'ed in to my office network. A slight break in connection and I lose my vpn as well. It seems to happen more often when a lot of data is being moved over the network.
Also wondering if my Logitech wireless mouse could be interfering. It is uses RF (not Bluetooth). Thanks.

A:Network connection drops

Do you get disconnected when you're wired?

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Hello all.

Yes, it's yet another "My Wireless Won't Work Right" thread! Your help would be greatly appreciated!

I recently moved to a new house, and set up one PC downstairs, with a Linksys WRT54G Wireless Router. PC#1 is hardwired to the router, no problems there. PC#2 (with a Linksys WMP54G card) is upstairs, one floor up and probably 20 feet over. Both PCs are above ground (nothing in the basement).

Initially, PC#2 was connecting pretty well. Generally I'd hit 54 Mbps and "very good" signal quality. But, it was spotty. While the connection wouldn't drop entirely, it would frequently drop enough to disrupt my FTPing of large files across the internet. I had my suspicions about the card, which had been jostled a lot and didn't seem to have a great connection between the antenna and card itself.

So, I replaced the whole setup with a brand-spanking new WRT54GS router and a WMP54GS card. Unfortunately, things have gone from bad to worse. It took me 3 hours on Support Chat with Linksys to even get any kind of a connection from PC#2, and now it just dies completely for huge chunks of time. I'll be online with a 54 Mbps connection, Very Good signal strength, then BOOM, couldn't find a network. Then 30 minutes later, it will miraculously find it again. It happens often enough that the PC is essentially useless for any work that requires an Internet connection. Note: Linksys' monitoring tool finds my network with a c... Read more

A:Wireless Network Connection Drops

If I understood correctly, your laptop experience pretty much proves that you are getting a constant good strong signal to the location of the problem computer. If so, don't mess with router's antenna.

Go to the Linksys web site and make sure you have the latest driver and utility for the adaptor.

Move the computer around a little. Maybe the fan or power supply or something is in the direct path of the signal.

Are you managing the connection with the Linksys utility or with Windows' Wireless Zero Configuration? Try the other one.

Are you using encryption? If so, WEP or WPA?

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I have a very big problem!My Internet connection drops for no reson,it simply drops.I want to know why it does this.I don't know it's from my router/modem/network card or my OS.

P.S:I installed this connection only a month ago(100 MB/S,cable).Before that i used a USB modem from ZTE(very low conection, but stable).

A:My network connection drops for no reason....

Quote: Originally Posted by Jezuz

I have a very big problem!My Internet connection drops for no reson,it simply drops.I want to know why it does this.I don't know it's from my router/modem/network card or my OS.

P.S:I installed this connection only a month ago(100 MB/S,cable).Before that i used a USB modem from ZTE(very low conection, but stable).

Hi Jezuz,

Do you have a different system that connect on the same network and does the connection drops there as well.

When the connection drops what is the status of LEDs on the router. Also, check the system in safe mode with networking and let us know if there is a difference:

Safe Mode

Keep us posted with the results so we can advise you further.

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T1 --> Sonicwall Router --> 3 Linksys Switches (ef3124) -->
Small Business Network, 40 Workstations & growing (ranging xp pro, vista home-pro, 7 pro), 3 network printers & 1 server (win server 2003) running as DNS.

Situation -
Most workstations are independently owned by the employee. About half are connected to the domain, half are not.

2 stations specifically lose internet connection intermittently (ipconfig /release /renew usually fixes, sometimes requires cat5e to be disconnected and reconnected, then fine until the next drop (not sure on a timeline)
1st station has had this problem with 2 different systems connected there ( First: Vista Home Premium, not connected to domain obviously, 2nd: 7 Pro also not connected to the domain.) ("MY PRIMARY CONCERN ATM")
2nd station runs wins xp pro connected to Domain (network drop occurs less often here)

Sorry if this post seems a bit jumbled, kinda in a rush.

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Every so often while i am downloading a rather big file my network connection will just drop out. When this happens i have to go through the process of clicking on network diagnostics and it will reconnect telling me my default gateway was not available. I am running Windows 7 64bit and using firefox, it is all on a wired connection.. If you need more info ask,, thanks in advance

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For a reason I can't understand, when I'm using uTorrent to download a large file, if I later start playing a game like Borderlands or opening other internet programs like IE8 or Skype, my connection will eventually drop.

When I right-click on the Network icon in the taskbar and select "Troubleshoot Problems", this program will reset my network. It almost always says "Default gateway isn't available"; I've seen the message "Local Area Connection 2 doesn't have an IP configuration" but this is rare. Even one time I saw the message "DNS server isn't responding".

I looked on Motorola's site for any driver updates but didn't find any. The specifics of my modem are:

SURFboard SBG900
Software version: SBG900-
Hardware version: 3

Is there something I can do to fix this issue?

A:Network connection periodically drops

well if default gateway isnt available then its the problem with the internet service provider so you need to consult the ISP and they can help you in changing the modem and provide you with the new internet connection

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I have just yesterday downloaded Windows 8.1 to my machine. Since then my computer loses its network connection often, and I have to reconnect via "Connect to a Network." This is quite annoying. Any help would be greatly appreciated. Thanks so much.

A:Windows 8.1 Drops Network Connection--Often


try updating the network adapter. is this a wireless or are you using a cable?

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I recently had occasion to re-install Windows Vista on my Dell Inspiron 1525, after which I found that my wireless network connection drops every few minutes or so. I am using an Intel(r) Wireless WiFi Link 4965AGN network card and an attempt to update the driver - installed from the driver cd that came with the machine - tells me that it is the newest available. When the connection drops, Network Sharing Center shows that the connection is still up, as does Network Connections. If I disable and re-enable the network card the connection comes right back. When it is down I cannot ping the router from Vista and all attempts to ping the machine from others on the network fail. The machine is within two feet of the router and other devices in the home do not drop connections. SFC /scannow ran normally. The Windows Firewall is off and the only change I made was to make it so that Windows does not shut down the adapter when it goes to sleep. The problem does NOT occur when I boot into safe mode which indicates to me that I do not have a hardware problem.
Any help would be greatly appreciated,

A:Network connection drops intermittently

Have you installed both SP1 and SP2 plus all updates? Try connecting a Ethernet Cable to do the updates then remove once all are done.

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We have Microsoft Navision software. A user using this app looses connection when the app is idle. However, at this time the LAN connection is fine as he can access the internet and recieves e-mails. this happens 9 times in a week, where all his navision settings are also lost
The OS is windows 7 32 bit.

Any help is appreciated

Thanks in advance

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Network/Internet Problem:
I have 2 desktop computers connected via ethernet to a Linksys router. Both are configured exactly the same way. One continually drops the internet connection [although in Network Connections it shows as connected].
The problem is in the network. I must manually right click on the LAN logo and select 'repair'. Usually the connection then works [although some times I must re-start the computer]. I also have 2 wireless computers connect through the same WRTG54 Linksys router. Only this one computer loses the connection. I have already set the advanced settings to 'force' the speed on my networking controller to 'force 100 full duplex'. This did not help. I'll mention that I have a vpn setup on both desktops. On the one with the problem, I can sometimes regain my connection by connecting to the vpn and then disconnecting. P.S.-> I use ZoneAlarm and both computers are set exactly the same. Even when I leave ZoneAlarm 'disabled', I still lose connection.

Any suggestions for additional attempt would be appreciated.

A:Internet Connection Drops / Network related

I think I'd do a complete virus scan, then check for sypware/malware and totally rule that out before you get too much farther into debugging the network.

Download / Install / Update / and Run:
Adaware SE check for any updates before running it.
Get the plug-in for fixing VX2 variants. You can download it at this SITE
To run this tool, install to the hard drive, then open Ad-aware->Add-ons and select VX2 Cleaner. Then click Run Tool and OK to start it. If it's clean, it will say Status System Clean. Otherwise, you will have to click on the Clean button to remove the VX2 infection.

Download and install Spybot S&D . Run Spybot and click on the 'Search for Updates' button. Install any updates that are available. Next click on the 'Check for Problems' button. Let it run the scan. If it finds something, check all those in RED and hit the Fix Selected Problems button. Exit Spybot. If you keep getting the DSO Exploit entries, even after you updated Windows and fixed them, then download the Spybot DSO Exploit Fix and install it over the current Spybot installation.

Scan your pc with one of these free online scanners:
Panda ActiveScan
RAV AntiVirus
Housecall. Be sure to put a check the box beside AutoClean.

Also, Download and install: HiJackThis 1.99.1.

(Always create a Folder for HiJackThis anywhere but your Temp/Temporary Internet Folders or Desktop. A good place to make a folder wo... Read more

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When I change users my network connection no longer works. I tried all of the network diagnostic troubleshooting things, and the system doesn't seem to be aware that there is a problem. I have to log-out, then restart the system, then login to the new user for everything to be OK. Any suggestions?

A:Change of user drops network connection

Welcome to Seven Forums!

When you login the new user can you open a command prompt an run an ipconfig /all command then post the output?

Another item to look at is in the Network and Sharing Center. At the right click on Change Adapter settings. Then find your network adapter and right click on it. Select Properties. Click the Configure button next to the name of the adapter. Select the Power Management tab and clear the checkbox that allows the computer to turn off the device to save power. Click OK. You can close all the remaining windows.

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Hi guys im new to this site and was recommended by a friend. I have spent the last 2 days looking through old posts before finally registering to ask for help, so here goes:

I have a home network with 2 PC's both running windows XP.
They are networked via 2 USB 802.11b wireles cards. The network is set up as an Adhoc network with file,printer and internet sharing running. I set up the network using the windows network set up wizard.
The main PC with internet connection is connected to blueyonder 1MB cable service via an external USB modem.

The network works great with an "excellent" signal strength at all times (upstairs to dowstairs). But...

Every now and again the remote PC will drop the connection. It seems totally random as it could be after 10 minutes or after 1 hour, Its very random. To reconnect i just disable then re-enable the network card (on remote PC) it connects instantly and all is well again, untill it decides to do this again. Does anyone have any suggestions to what could be causing this? It is not a huge problem but is iritable. It even happens when network/internet is in use. But may still be some type of power managment issue. But my hands are in the air and im open to all sugestions.

Thanks in advance for anyone who tries to help me out.

A:wireless adhoc network drops connection

Could be interference from microwaves, mobile phones, etc.
The paper "ABGs_of_Wireless_2.03.1.pdf" on http://www.netgear.com/products/wireless.html lists possible sources of interference for the various wi-fi standards.

The general advice about improving range at http://kbserver.netgear.com/kb_web_files/n101160.asp may also be of some use in general troubleshooting.

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Hi! This is the Hijack log file

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 9:36:17 PM, on 7/25/2007
Platform: Windows XP SP2, v.2096 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2096)
Boot mode: Normal

Running processes:
C:\Program Files\Trend Micro\Internet Security 2006\pccguide.exe
C:\Program Files\Winamp\winampa.exe
C:\Program Files\DAEMON Tools\daemon.exe
C:\Program Files\Java\jre1.6.0_02\bin\jusched.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\avgas.exe
C:\Program Files\MSN Messenger\msnmsgr.exe
C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
C:\Program Files\WordWeb\wweb32.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
C:\Program Files\ChessBase\PlayChess\PlayChess.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Spybot - Search & Destroy\SpybotSD.exe
C:\Program Files\Internet Explorer... Read more

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In short, when I try copying large files ( > 1.0 GB) from my PC (wireless AC) to my NAS (ethernet), the connection drops sometimes (the sometimes is the irritating part.
- I have a Asus wireless AC adapter on this PC.
- It is more likely to happen if I am downloading other files (from the internet) while I am trying to copy this file (and this makes sense), however I would think it would just go slower (when I have more network traffic) - not just drop the connection.
I tried...
- Replaced every cable to Cat-6 within the past month.
- On my adapter I disabled the IPv6 (as I read that can cause connectivity problems).
- Updated the router's firmware. The router is an Asus RT-AC68u

I have a second PC with a wireless AC adapter and tried copying a large file to my NAS (ethernet), and the connection also dropped.
I don't know if this is a Windows 7 issue or if my router settings need to be adjusted to correct this. I did disable the IPv6, and I thought that would take care of it. If anyone can offer some suggestions, that would be appreciated.
Thank you.

A:Network Connection Drops when Transferring Large Files

Have you tried LAN to LAN transfer (don't use your Wireless NIC) and see if the drops happen? If not, there might be issues with WLAN and you may need to update drivers for your Wireless NIC.

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i have been trying to find a solution to this issue but so far no luck. basically here is the problem. i have linksys wrtg54g router and comcast is my isp provider. i have one pc hard wired to the router and two pc's connected with a wireless card. there are no problems at all with any of the computers except when i copy files between the two wireless computers. they are both desktops. whenever i try to copy over a file say larger then 20mb i lose my internet connection on all 3 computers and have to reset the router. as long as i dont copy files from one to the other i never have any disconnect issues.

A:internet connection drops when transferring files over network

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Hi there,
My laptop was infected with Virtumonde + W32/Sality.gen + W32/YahLover.worm.gen. I used McAfee and Spybot SSD to clean up the malware. I can attach the McAfee virus logs if requested.

I'm currently facing the following issues:
A hosts.msn file that keeps coming back after multiple deletions. I searched Google and found that this could be a trace of some malware.
My network connection keeps getting disconnected. I have to physically remove the ethernet cable and plug it back in to make it work. I don't face this issue when I'm using my other laptop.

Thanks for your help.

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 21:53:02, on 14/09/2009
Platform: Windows Vista (WinNT 6.00.1904)
MSIE: Internet Explorer v7.00 (7.00.6000.16809)
Boot mode: Normal
Running processes:
C:\Program Files\Windows Defender\MSASCui.exe
C:\Program Files\Hewlett-Packard\HP Quick Launch Buttons\QLBCTRL.exe
C:\Program Files\Java\jre1.6.0\bin\jusched.exe
C:\Program Files\Synaptics\SynTP\SynTPStart.exe
C:\Program Files\McAfee\Common Framework\UdaterUI.exe
C:\Program Files\HP\HP Software Update\hpwuSchd2.exe
C:\Program Files\Hewlett-Packard\HP Wireless Assistant\HPWAMain.exe
C:\Program Files\HP\QuickPlay\QPService.exe
C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
C... Read more

A:laptop drops network connection after virus cleanup

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Often my router drops connection to all my devices. Multiple times a day. It's only for a minute or so, but it's annoying. I'm using a Linksys Wireless-N router (WRT160N) with WEP encryption. I'm running two Windows 7 laptops, LG BluRay player, Apple TV, Xbox 360 (Wired) iPhone 4, and a iPad 2. It doesn't matter if I'm browsing the web, watching Netflix, or playing a game, the connection gets lost. As we speak it happened again. I have no clue on what to do. I've reconfigured it multiple times. Firmware has been updated months ago. I bought this about nine months ago. This has been a problem since day one, only now I'm seriously getting fed up with it since I started working from home.

A:Home network router constanly drops connection.

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I have a new HP desktop running Vista 64 bit. It has Atheros abgn dualband network module. It connects but will soon (seconds, minutes, hours variable) drop the internet connection and say access is "Local only." Signal strength is still reported as "High." It may or may not reconnect automatically. Disconnecting and reconnecting usually works but it will soon drop again. Upon re-connecting the number of networks presented varies from none to 10. I am pretty sure the 10 are always there but they are not being detected.

HP support had me ensure the card was in ,etc. and wanted me to restore pc to factory settings. As I have had 2 new from factory that start with this problem I am not so keen to do this. This is second machine to have this exact issue.On first machine I re-installed driver with no effect. They replaced it because I was having other strange issues within my return window.

The computer sits 12" from an HP laptop also with Vista 64 bit, same software and configs, with Broadcom abgdraft-n wifi adapter. The laptop never has lost a connection nor have other computers on the network.

My router is Linksys wrt310n with WPA security. It is 30 ft line of site to the computer in question. I have 3 other computers connected via wireless (g or n) with no issues. I have tried tweaking channels, etc. but to no effect.

Any help is appreciated.....

here is ipconfig

C:\Users\Steve>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . ... Read more

A:Wireless network connection drops internet - goes local only

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i have a laptop with wireless connection to my home lan.
all computers including laptop are running windows xp.
the problem is that laptop periodically looses connection and then establishes it again. I know why this happening. Apparently windows trying from time to time to search for wireless networks with better connection and while it doing that it drops previous connection and reconnects again.

I guess it is usefull when there are many wap's around but not when there is only one and there is no point in trying to find others.

I hoped that may be someone can tell me how can i change/tweak this default windows behaviour.
(i looked through various networking dialog boxes but didn't find anything related.)


A:windows searches for better network and drops current connection

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I'm at wits end, and if I had hair, I'd be pulling it out.

I'm running a home network with a new Netgear N600 Wireless Dual Band Gigabit Router. I have an external drive connected, and running WPA2-PSK (AES) security. My ISP is Shaw (Canada).

I'm running several devices off this network successfully.

-Win 7 hard wired
-Win XP Professional
-Win XP home
-three cell phones (two BB, android)
-Samsung Galaxy 10.1
-several ipods
-Win 7 wireless*

*this is the problem child. When the network is booted, connections are established with no problem. When other items enter the network (particularly the ipods), the Win 7 wireless loses connectivity. I get the little circle around the network icon, and 'limited connectivity', cycling through with "No Network Access". When crashed, ping gets no responses. No other devices have any issues connecting or staying connected.

I try turning off and on wireless on the computer, disconnecting and connecting to the network again, nothing works. The ONLY solution is to reboot the router and modem. This will gain me connectivity for a while, but often, as soon as another device enters the network, it crashes again. It's exceptionally frustrating.

I've tried to designate specific IP addresses via MAC addresses in the router settings. I've tried to disable the IPv6, nothing helps.

I've been reading and reading various guesses about what's happening. The latest try has me disabling "Computer Browser" from S... Read more

A:Connection Drops when other devices connect to home network

Anyone... anything???

Just to add a little more info.. I thought it was just when the ipods entered the network, but last night, a BB entered the network (pretty much everything else running smoothly) and it crashed the Win7 wireless again. Very frustrating.

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