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USB Device Recognized / Not Recognized based on shut-down method

Q: USB Device Recognized / Not Recognized based on shut-down method


I have a PC which is having a lot of trouble recognizing a USB data acquisition device. Starting from a situation where the PC *does* recognize the device, here is the basic pattern:

1. PC shows device in Device Manager under "Data Acquisition Devices".

2. If the PC is power-cycled via the power plug itself, the device is no longer recognized under Device Manager ("Unknown Device").

3. If the PC is power-cycled via Start Menu --> Turn Off, same results as above, no longer recognized.

4. If the PC is power-cycled via Start Menu --> Restart, no problems, device recognized.

When the device is not recognized, unplugging and replugging the USB cable makes no difference to the situation. In order to correct the issue, I disable and then enable via Device Manager (which also involves a restart).

This pattern is extremely repeatable.

I am working with WinXP SP2, Pentium, 2.8 GHz, 504 MB RAM.

This PC was returned from a customer site - the PC and USB device are used in a machine my company manufactures. Apparently this issue just started happening one day. We want not only to correct the issue, but in fact to understand the root cause and ensure it will not happen again in the future.

Any suggestions would be greatly appreciated - thanks!

Preferred Solution: USB Device Recognized / Not Recognized based on shut-down method

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: USB Device Recognized / Not Recognized based on shut-down method

You could try reinstalling the usb drivers.
JohnWill has fix that is worth a try

Johnwill's solution

Create a file with NOTEPAD containing the following lines and save it as FIX.REG
-------------------------- Use text after this line --------------------------------

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment]

-------------------------- Use text before this line --------------------------------

Double click on FIX.REG and say yes to the Merge Into Registry question.

Unplug ALL USB devices.
Open Device Manager.
View, Show Hidden Devices.
Uninstall all devices under USB Controllers.
Uninstall all devices under Disk Drives that you know are not present.
Uninstall all devices under Storage Volumes. Say no to any reboot prompts until you are finished. Also, if a Storage Volume doesn't uninstall, ignore it and move to the next one.
If you have a yellow ? with unknown devices, uninstall all of the entries there as well.

When this is done, reboot TWICE.

Reconnect the USB devices and see if they're recognized properly.

NOTE: If you have a USB keyboard and/or mouse, you'll have to modify the instructions and leave enough parts for those to function. I don't have one yet, so I haven't had time to modify the instructions.
Microsoft MVP - Shell/User

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Hello everyone..
Yesterday my laptop pushed a new Win 10 update, and all went fine, or at least I think so.
But today I see that my Sony WALKMAN - which I used with no problem until now, can't be recognized anymore.

Basically it just shows as (E or Usb Drive E: but when I click it it says "Please insert a disk into E:/" like there is nothing there.

Now the interesting part is.. if I go to Device Manager I see it and clicking on properties etc t says it's working fine.

But if I go to Disk Management, the Drive shows as 14 gb of unallocated space and it's greyed out.

However, if I put it on my brother's laptop, it works perfectly and it can be opened, music moved into it etc - it shows as Healthy - Primary Partition in Disk Management. So it doesn't seem broken...

It's the same on each of the 4 usb ports btw. But, other usb devices (2 phones, 1 tablet) don't have any issue and are detected.

What could have caused this? I tried the basic Disable/Enable in Device Manager and also Uninstall Driver.. It doesn't do anything, it appears back when I replug it in.

No change in Safe Mode and no change after sfc /scannow

If anyone has any idea I'd be happy to try anything to fix this..


A:USB device not recognized on my laptop but recognized in other pcs/lap

This problem is being reported by many forum members with many different USB devices. It seems that Windows 10 Anniversary is having problems properly recognizing certain USB drives and devices. So far, no one has come up with a clear fix for this issue but it sounds like it is clearly related to the Anniversary update. For the record, I did a clean install and have not had any issues but most of the people reporting this problem make reference to updating to Anniversary.

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I tried replacing the hard drive on my Inspiron 9300 with a 200G drive.  The administrative computer tools in Windows XP recognized it, but the BIOS showed it as 130G or so.  I finally had to replace the drive with a smaller one.  I had the latest BIOS version.  Is there a BIOS fix that will allow the larger hard drive to be used?

A:Hard drive not recognized by BIOS but recognized by WINDOWS Inspiron 9300

Not on the 9300s that use EIDE (parallel ATA) drives, no - the limit is 137G in BIOS setup.

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I just rebuilt an old system using Windows 7 Home Premium after using WinXP pro for many years. The primary hard drive is WDC 150 Mg and Win7 is installed and updated to current with SP1. I dropped a second WDC hard drive in, formatted and was going to use it for a 2nd backup unit. Both of these are sata. Both hard drives are recognized by Disk Management but when I select Computer on the start menu ONLY the primary 150 Mg drive is recognized. If I plug in an external drive, both Computer and Disk Management recognizes the external drive. How do I have Win7 recognize my backup WDC drive so I can use it.

Thank you

A:hard drive NOT recognized in computer but IS recognized in disk mgmnt.

Quote: Originally Posted by PERSIL

I just rebuilt an old system using Windows 7 Home Premium after using WinXP pro for many years. The primary hard drive is WDC 150 Mg and Win7 is installed and updated to current with SP1. I dropped a second WDC hard drive in, formatted and was going to use it for a 2nd backup unit. Both of these are sata. Both hard drives are recognized by Disk Management but when I select Computer on the start menu ONLY the primary 150 Mg drive is recognized. If I plug in an external drive, both Computer and Disk Management recognizes the external drive. How do I have Win7 recognize my backup WDC drive so I can use it.

Thank you

Had similarities on my pc.

Goto BIOS, there you have 4 options.

Primary Master
Secondary Master

Primary Slave
Secondary Slave

Set it as follows:

Primary Master -----> Main Boot HDD
Secondary Master -----> EMPTY

Primary Slave -----> CD/DVD RAM
Secondary Slave -----> Secondary backup HDD
Hpe it helps!


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Hello everyone,
i hope you can help me sorting out this issue that is causing me a hard headache at the moment.

I've bought this new Lenovo Z50-70 laptop with windows 8.1 preinstalled on it. Fresh new.

I'm trying to connect via usb a guitar audio interface (Line6 POD HD500) so i installed the drivers via the .exe setup file i downloaded from Line6's site.
The device worked fine on my previous HP pavilion with windows 7.

Now when i completed the installation, i connected it and i had this error:Windows has stopped this device because it has reported problems. (Code 43)A request for the USB device descriptor failed.
I used slimdrivers to update all the other drivers, in case it was a conflict causing the error.
I checked via command prompt with command "pnputil -e" and i saw a driver from the vendor of the device listed, so it is installed correctly i think.
I tried all USB ports i have, 3.0 and 2.0 on one side of laptop and 2.0 on other side.

When on device manager, if i click update drivers and choose the "let me pick from a list of device drivers.." i don't see the company name of the device.

i saw that another guy posted a really similar problem on SevenForum and he figured out how to force windows to use the drivers but he didn't post the solution.. Here is the post: Can't get Windows 7 x64 to use the drivers I've installed repeatedly Solved - Windows 7 Help Forums

Edit: the software tool from which i can update drivers and other things for my g... Read more

A:USB device not recognized. Device descriptor request faile

I am having the same exact problem as you, Cattanius. I couldn't get it to connect to my computer over 2 years ago and then just decided to try it the other day. I didn't expect anything to show up in device manager because I thought the usb port was fubar, but then I see the same message you got and all of the sudden there's hope! I hope.

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I have an 8GB sd card i used while traveling and upon trying to get the pictures from it the computer does not recognize the card at all, no prompts, nothing. I have tried it in multiple pcs and macs and no response. My Cannon Rebel XS camera says no images found. However, when I plug it into my brother's Cannon PowerShot it actually recognizes and shows all pictures on the card. Does anyone have any reason why this is happening and how I can recover the pictures? I am not willing to just format to make the card work again, I must have these pictures.

A:SD Card not recognized in computer but recognized on camera

Have you tried leaving the card in the camera and attaching to the computer to d/l the pictures that way. I have an Olympus camera and the pictures will d/l fine with the card left in the camera.

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Hello all. It has been a while since I've needed help but my run of luck has hit an ugly downturn. Moved my computer three weeks ago and had not plugged it all back together till last night. All these years I had used it without a password to log in but a few months back a tech friend expressed horror at this so I started using one. Last night no matter what I did it wouldn't let me log in, saying incorrect password. Today as I messed around again I went through the steps of asking it to reset password (even though I didn't have disc for reset) and realized it does not seem to be recognizing my internal drive. If one of my externals are on they come up but if I turn off externals I get a bubble that says 'No Drive. This feature requires removable media etc.' My drive seems to be running and the Windows logos do appear during boot. My keyboard seems to be functioning to type password, but when I hit F8 while rebooting I get no reaction, so cannot boot to safe mode, just goes right back to log in page. I have had mold/moisture issues in this new house but have had a dehumidifier running since just a few days after computer arrived here. However I do see some evidence of mold or dust in the case, not a lot but some. Not sure what the root of this problem is but I am trying hard not to panic. Any ideas?

A:Internal drive not recognized/password not recognized

Your tech. friend may have mis-understood when you need a password.
If you are at home and only you and you trusted family have access to you computer, there is no need whatsoever for a logon password.
The only time I have ever needed one is when I was using my own laptop on clients site when I was contracting and I would leave it on the desk over lunch.

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Hello, please let me know if I'm in the wrong place or you need more information. I did read the pinned topics, and I hope I'm able to give a clear enough account of my problems, but by all means let me know if I don't.

I am on an HP Pavilion dv6000, Windows Vista 32-bit. Again, I'll give any other info you need.

A few months ago 3 problems started, probably around the same time. I didn't really take note of it when it started, thinking they were one-offs. Two weeks or so ago I took it into BestBuy and had the GeekSquad there look at it. They vaguely told me that there were 365+ "traces," and that it was multiplying any time the computer is on. (It has not, however, gotten any worse since then, and I've continued using it.) They wanted $200 to fix it and it would take days, they said. I don't have that much money to blow, so I'm prepared to save some files on my uncle's external hard drive and just completely wipe this laptop to factory settings. Hopefully though, someone will be able to help find another solution. The people at the store thought the webcam and shutting off problem were virus-related, but that the freezing was overheating. I think all three are virus-related, and I'll go more into each problem here:

--1. My laptop has a built in webcam. In the taskbar a bubble will pop up that tells me "This device can perform faster" and gives me USB 3.0 options, which I don't have, but basically it is t... Read more

A:Webcam not recognized, freezing, random shut downs

Have you considered...the possibility that your system is overheating?


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Well, just a couple days ago, I went to plug in my PSP system to put music on it. I have done this many times in the past, and I do it quite frequently, so I expected it to be like every other time, but, to my surprise, in the lower right of my computer screen, an error message pop'd up reading,

"USB Device Not Recognized
One of the USB devices attached to this computer Has
malfunctioned, and Windows does not recognize it.
For assistance in solving this problem, click this message"

When I click the message, all it shows is my USB ports, with my PSP as a not recognized USB device... What happened? I'm stumped.... Keyboard USB's, and Bluetooth USB's still work, just not the PSP. I've formated, and un-installed and re-installed, and nothing works... >.<

A:USB Device Not Recognized

Help Plox... Also, my PSP works on other computers, so It's not the PSP or USB cord...

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I get this error when I try to connect my external drive. It was working yesterday before my PC locked up on me and shut down... When I got it going again I started getting this USB error and I can't access anything on the external drive now. Please help if you can. Thanks so much!

A:USB Device Not Recognized

Seems several things are not working. I tried to just restore my system to an earlier date but ummm there are no dates to restore to?

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I have a Compaq Presario CQ5306UK Desktop PC with windows 7, which I have had for over a year with no issues. I recently went travelling for 6 months and on my return have this issue. I can't say for certain but I think it was working for a few days on return but it may have been from when I first started using it again so I'm not sure if this is from lack of use for 6 months or what.

Whenever I try to connect USB devices I get the message "USB Device Not Recognized - One of the USB devices attached to this computer has malfunctioned, and Windows does not recognize it"

My USB mouse, keyboard and speakers still work fine. But whenever I try to connect my camera, my USB card reader, my Iphone or Ipod (So any other USB device I own) I get this message.

I have tried connecting my camera on a friends PC and this works fine.

Searching on the internet I have tried a few things, I have updated all my drivers, I have tried unplugging my PC for 30 minutes, none of these have any affect.

Another potential solution I have seen is to uninstall all USB devices using device manager and then to unplug for 30 minutes. I am unable to do this one as my mouse and keyboard are USB, and there annoyingly are no PS/2 ports on this computer, so can only get so far down the list before mouse and keyboard stop working.

I really hope someone has some idea how to fix this and it's not a sign that some vital part of my pc is dieing!

Thanks in advanced for any help with thi... Read more

A:USB Device not recognized

Please perform the following, so that we can get the exact specs of your computer. This will better assist us in helping you more.Publish a Snapshot using SpeccyThe below is for those who cannot get onlinePlease take caution when attaching a text file to your post if you cannot copy/paste the link to your post, you will need to edit it to make sure that your Windows Key is not present.

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I've had an issue that has been driving me nuts for the past few hours. I have a Dell Inspiron 537s tower on which ive done a clean install of Windows 7 x64. Everytime I plug in a USB device it gives me a "usb device not recognized error". I've tried every solution ive found (uninstall all usb ports, unplug computer from outlet, updated the chipset drivers, etc). NOTHING has worked.

If I disable "USB2 Enchanced Controller" (USB 2.0) in device manager, all my usb devices magically begin to work and install, but only at USB 1.1 Speed. This is a big setback for me. The strange thing is though, that my keyboard and mouse work regardless. Only things such as my webcam and external hd are "not recognized" or "malfunctioned". I've even tried Vista x64 and Windows 7 x32.

Does anyone have any ideas???

A:USB Device Not Recognized

make sure all important updates are installed from microsoft update.

look up dell drivers for your motherboard usb controllers and install the updated one.

Type System Information in search bar in start menu. click "Components" and then click problem devices toward the bottom. update whatever it lists

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Hey guys. I'm trying to get my Cowon J3 MP3 player to work with my HP Elitebook 8440p. I know, I know- who uses MP3 players anymore right? Well I love this thing to death- it sounds great and has awesome battery life even after something like 7 years or more.

My problem is when I try to connect it to my Windows 10 laptop I get 'USB device not recognized." I've googled the problem as many ways as I can think to do so, and tried many solutions but nothing seems to work. the device is able to connect in both MTP and MSC mode, but neither will work.

I'm currently traveling, and before I left home I plugged it into my windows 10 desktop and interacted with it via windows media player no problem, so I find it unlikely to be a problem with the player itself. I'd try it on another computer but I'm surrounded by macs... (I did try plugging it into my roommates mac just cuz but no luck there either).

If anyone could suggest something that might get this gem of a legacy device to interact with my laptop I'd be extremely grateful
Thanks for reading!

A:usb MTP device not recognized

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When I plug my USB flash drive to system then Windows show me below error and USB device can't work:

I update BIOS and reinstall USB and Chipset drivers but problem exist. My USB flash drive is OK and working with other systems. I changed USB ports too but problem not solved.
Any idea?

Thank you.

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Every time I plug in any USB device into my Acer Aspire 5100 laptop, I get the dreaded USB device not recognized pop up message. I have been trying for months to fix this, but cannot find any solution.

some info:
Vista home edition 32bit
AMD Turion 64 x2 mobile TL-52
Acer Navarro MOBO, ATI Xpress 200 chipset

I have tried unplugging the computer and letting the battery drain, updating drivers, system restore... nothing helps.

the problem started about a week after I reinstalled windows on my machine after a power outage caused my computer to cease booting at all. I plugged in my new ipod nano, and updated it one time, and then my USB ports never worked again after that first time plugging in my nano. No devices work, no mouses, no printers, no flash drives.

please help! Thank you!

A:USB device not recognized

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I am getting a constant error. When the error happens I hear the usb connection alert sound and a pop box appears in the lower right corner of my screen.
I tried installing the chipset drivers again and when that didn't work i did a system reinstall. The only us devices I am using is my wired mouse and keyboard. Both usb devices work. I am not sure what else to do.

A:USB Device Not Recognized

hi and welcome to seven forums

have a read of this link here it covers your problem >>> Fix Windows 7 “USB Device Not Recognized” Error>>> Fix Windows 7 “USB Device Not Recognized” Error | Windows EXE Errors

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Hi guys-

I just bought a new mobile phone and tried to connect it to my PC using a USB cable (which came as an accessory with the phone), Windows XP SP3 gave me the following error: "USB Device not recognized". But the phone is charging and I checked Device Manager->Universal Serial Bus Controllers and there were no yellow exclamation marks either.

In total I have 6 physical USB Ports, 4 in the back & 2 in the front. On one of the ports on the back I have my HP Printer connected (the device is in power off mode).

The error message displayed is consistent for the 2 ports in the front, but for 2 out of the 4 ports in the back the phone connects perfectly displaying the internal & external memory in 2 separate drives, as for 1 port in the back it says "High speed usb device attached to non high speed hub"

What is going on??

System specs:
Motherboard: Intel 945GTP
Processor: P4 3.2 GHz
DVD Writer: HP dvd1260
Video Card: nVidia 9500 GT 1GB

A:USB Device not recognized

Hi Ax, Heres a link I found that shows a fix for your exact problem.


It simple and definately worth a try. Let me know if I can help further. I will monitor this thread through out the day. If this fixes your problem please post back so I can move on to other issues.


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I have an HP Pavilion zv6000 laptop running XP Home and a Toshiba E335 PDA. Up until a few weeks ago I was able to sync the two using Active Sync 4.5. Suddenly, the laptop is not reconizing the pda. I get an error message saying that "one of the devices connected has malfunctioned and Windows does not recognize it." When I click on the annoying bubble I get an unknown device which eventually states that there are no drivers for the device. So reinstalled the drivers and I still get the same error. I've uninstalled the device and tried to reinstall in addition to visiting the Toshiba site and downloading the drivers from there. I can't rollback the drivers because it claims there are no drivers installed. It is extremely frustrating since it worked fine. I'm wondering if a Microsoft update might have screwed up things. Does anyone have any suggestions?


A:USB Device not Recognized

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im having troubles with usb devices on an xp computer,
computer is virus free,
when i would plug in a usb device it would come up with the messege "usb device not recognized"
this would happen with usb storage devices, a printer, and a wireless adapter, occassionally they would work but most of the time not,
the computer also has a usb mouse but strangely that always works,
i used usbdeview and removed everything in the list except the mouse, i have also gone to device manager and removed all hidden devices from the system,
after doing those things it got a little bit better, but now its starting to give the error again as often as before,
i removed the printer from the system and re-installed it and it worked, now after only one day the printer would not work and its not even listed in the system, i tried unplugging it from the system and plugging it back in, and it comes up with the same error
i dont know what to do next?

A:USB Device Not Recognized

Worth a read, IMO:  http://support.microsoft.com/kb/871233 .

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I had a dell 4400 with usb 1.0 ports.....i just got a new compaq presario sr1730t with usb 2.0 ports. the dell saw my PSP fine, the Compaq gives me this - "USB Device Not Recognized"
Please Help!

A:PSP - USB Device Not Recognized! Please Help?

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I am trying my darndest to set up a home network. I finally got done with the main computer last night, and it's working fine with the wireless router - Linksys G Speedbooster, after spending hours on the phone with Link tech support and then the DSL company to get them to see each other.

The problem is now I can't get the older computer to "recognize" the USB wireless adapter I'm plugging in. The computer is an older model HP Brio running XP Pro, and the tech guy from Linksys is telling me that the USB port (there's only 2 on the back of this machine) is too old/slow, and that's why I'm getting the error message in the title of this thread. He said I should contact HP to "update the USB drivers." Is that even possible? Based on what I'm reading, it sounds like I need either a wireless adapter "card" as opposed to the USB type (to avoid the whole USB issue?), or get a new card for the USB to get it to work faster and see the newer stuff I'm plugging in there.

Your thoughts are much appreciated...this is exhausting!

At this point,


A:USB Device Not Recognized

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Hi everybody

I am using windows 7 ultimate sp1 duel boot with windows xp sp2
i have a usb wireless mouse , USB wireless LAN adapter and USB WD My Passport 500GB HDD and Iomega 500GB HDD alos USB
They where all working fine before 2 days
then suddenly windows prompts a messege saying '' Usb device not recognized ''
and the messege flashes spontanously every 2-3 minutes
I EVEN DISCONNECTED all usb devices but the messege still persists every 2-3 minutes comes spontanously.
I have encountered the same problem before one month but ignored it it was fixed by itself.
i installed a fresh copy of windows 7 but still the same also same problem in windows xp.
Laptop model : Toshiba satellite L300
CPU : Intel(R) Core(TM)2 Duo CPU T5800 @ 2.00GHz
Memory : 2.00 GB
So please help i don't know what it could be , i appretiate it thanks

A:USB Device not Recognized Please Help

Can you post a screen shot of Device Manager ?

Screenshot tools.
A Preferred Method of Uploading/Posting Screen Shots
How to Use the Snipping Tool in Vista - Vista Forums
Snipping Tool - Windows 7 features - Microsoft Windows
Use Snipping Tool to capture screen shots
Screenshot with Paint
Screenshot and Upload using MWSnap
fscapture free download

Use Snipping Tool to capture screen shots

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Hi all ,

Every now and then my mouse icon freezes and I get a message 'USB device not recognized'. I then have to remove and re-insert the mouse in its usb slot and it then works to the next occurence usually within an hour.

Would appreciate all ideas to solve this problem.


A:USB device not recognized ???

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Here we go again,
my xp notebook constantly displays the "usb device not recognized" etc.
I don't have any usb devices plugged in!
Also, i get the pop up, up to 4 times when i open the top on the netbook.
It's an msi U210.
xp home
Thanks in advance

A:usb device not recognized...xp

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It started a few days ago. My external hd is not recognized. also my usb head set doesn't work. My ipod and sansa mp3 players work find as well as my usb thumb drives. I posted here because I am not sure if this is a hard or software issue. Thanks in advance for any help.

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My computer keeps telling me this, even if there are not any usb devices plugged in. It keeps telling me this, sometimes as many as 20 times a minute. Why????

A:usb device not recognized

Try removing/deleting all of the USB controllers from Device Manager and reboot.

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My USB flash drive is suddenly stop working, when I insert in the slot it detects but it says Windows is not recognized the device and in the device manager it shows Unknown Device. I have tried this USB on many computers and on different operating systems but the problem is same. I think its builtin plug and play driver is corrupted. I have my important data on it and I have to recover it. Please help me!!!!!

A:USB device not recognized

"I have my important data on it and I have to recover it"

Never, ever store important & irreplaceable data on just one drive, and especially if it's a flash drive as they are more prone to failure than hard drives (and unlike hard drives you don't get any warning). Flash drives are designed for short-term storage only (such as transferring files between computers).

It's not a driver issue if the same thing happens on other computers, because the driver is built-in to Windows (Windows XP and later) and they can't all be corrupted. The fact that the fault is constant on all computers proves that it's a faulty flash drive or it's simply worn out and needs replacing. Buy a well-known, reputable brand (Integral, SanDisk etc).

Normally I would recommend using some file recovery software to retrieve the data on it, but that requires the system to recognise the drive.
I can't think of any other way.

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Hey all,
I'm running win 7 64bit on a P6X58D premium mobo

I just build the computer and had a brand new SSD that i loaded windows onto. now none of my USB stuff will work
none of them work, but when I plug them in windows detects them and just goes right away and says that they dont work usb device not recognized)

I've tried updating windows, disabling usb in the bios, turning off and unplugging and waiting a few minutes, installing all the drivers I can find for usb, nothing seems to work.

Please let me know if anyone knows whats going on and how I can fix it! thanks!!!!

A:USB Device not recognized

Brand new install of M/board etc

Double check front (& rear) usb peripheral leads/connections. Could be wrong way around or connector misplaced & missing pins.

Did win 7 update all its drivers over the internet - not off your motherboard cd?

Are there any malfunctioned drivers in 'device manager' Try clicking on the very top icon and "scan for hardware changes" one or two drivers may be lurking and not loaded properly at first install.

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Here is the background on my system.

HP Pavilion DV7t 3000 CTO running W7 SP1, Intel Core i7 processor, 4 GB RAM.

Had an issue pop up the other day involving the left hand side dual USB ports where if I connect ANY peripheral USB device that device is not recognized. I thought it may simply be a driver issue so I checked for driver updates and none where found. Both ports run off of one power strip inside the laptop. Pics enclosed. I have tried everything known to man (at least that I can find via Google) to try and resolve the issue aside from replacing the USB ports. Finding the part shouldn't be too hard but installing it may be without a detailed breakdown of how to do it.

Before I drop my time and money on a new USB board what else can I try?

A:USB Device Not Recognized

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everything was fine before - now this.
no software has been installed.
this occurs on both XP computers and only (so far???) with the HP Personal Media drive -back up drive.
all other usb devices are okay.

one of the computers was recently set back to factory specs and is seldom connected to the internet as we have an internet only old XP computer
thanks all

A:usb device not recognized

Try this.

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OK Here's my problem. I get a "USB Device Not Recognized" error when I plug my camera into the front USB port of my computer. It works fine when I plug it into the back USB port. Because of the position of my PC, it is a royal pain to get to the back side of the PC, so I really want to be able to use it in the front USB port.

I believe it was caused because I plugged it in before installing the driver software. The driver software is now in place, however it still will not recognize the camera. It shows up as "Unknown Device" in the device manager.

Can anyone help?

A:USB Device Not Recognized


Plug it in until it shows as unrecognised, then uninstall from within device manager, and try again.

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I am connecting a mini dv camera with a firewire cable to a usb port through an adaptor from firewire to usb, but the error usb device not recognized appears. I have tried with 2 different computers with 2 different OS, XP and 7. The camera model is Sharp Viewcam Z VL-Z400. Can anyone help me?
Thank you.

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I have seen a few posts on this subject and I still can't get mine to work. My device is a Cirago 1TB mass storage device. It just stopped working and I have important files on there please help me as there are files on there that I need to run a website I own.

A:usb device not recognized.

Test it on another PC. That will determine if you have a PC issue or a faulty drive.

And I hate to point out the obvious, but you should have a backup copy of all important data.

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I bought a external hard disk of Western Digital 5000GB. but since I have bought it I havn't able to connect it to my pc. Everytime I connect it to my pc under windows7 , it displays" USB device not recognized". I have installed its drivers from western digital website. I got it replaced as well once. But still same problem occurs. I have connected it to my USB PCI card as well. but still it is not recognized. If sometime it displays" the device is ready to use", but its location isn't accesible.
please let me know any solution regarding this problem.

A:USB device not recognized

The drivers for USB 1.x are installed automatically by the operating system.
The drivers for USB 2.0, if your motherboard supports USB 2.0, are built into Windows 7 but the main chipset drivers for your motherboard must be installed.

What are your computer specs? Have you tried other ports?
Let's check out your device manager:
Click start> Control Panel> System info> Look for the tab "Hardware" (click on it) there should be a 'Device Manager' link. Please open this and see if there are any devices listed with a yellow triangle, question mark or red X.Also, can you please tell me what devices are listed under the 'Universal Serial Bus controllers'.

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"USB Device Not Recognized" is a message I receive very frequently. It appears that this does not prevent my computer from operating properly, but it is a nuisance and distracting. The peripheral hardware that are connected to the USB ports in my laptop and USB hub all work okay. Looking at Device Manager, there's always an icon in the list of "Universal Serial Bus controllers" that is labelled "Unknown Device". I have disabled this device, but I still see the "USB Device Not Recognized" message! Any suggestions? Thanks.

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Greetings everybody,

I have a Removable Memory of over 200GB where I saved all my videos and photos plus other stuff. Recently, every time I go to My Computer, either I don't see any G or if there is, then all the items show empty folders. After I pluged and unpluged its USB and power cables, it usually worked. Today, however, I cannot make it work. Everytime, I plug it to the computer, I get a message saying:
"USB device not recognized. One of the USB devices attached to this computer has malfunctioned and windows dows not recognize it. For assistance in solving this problem click this message." I do click the msg but I don't get anywhere.

What do you think the problem could be? I am terrified of the possibility of losing years of photos and videos. This was supposed to work as my backup system!!

Your help is greately appreciatred,

A:USB Device not Recognized

Make sure your external drive is unplugged and go into device manage - scroll down to your usb ports and delete them. Reboot the computer and see if your OS, XP I assume, re-establishes your drivers for them. then plug in your HD and see if you can find your files. Luck Jazz

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Hello. This is frustrating me a lot.

Yesterday I finished working on a song with my M-Audio Keystation 61ES and switched it and my computer off. The next day, I go to plug it in and turn it on, and Windows 7 greets me with "USB Device Not Recognized, USB device has malfunctioned"

I have downloaded the latest drivers from the M Audio website, I have reset the computer (and turned it off at the wall), uninstalled the driver with device manager and manually selected the new M Audio drivers, added a registry key (http://www.ntcompatible.com/Desperately_need_help_---_USB_Devices_Not_Recognized_t32356.html), tried a different USB port, tried a different USB cable.

What happened? Why is the device suddenly not working today?

Running out of ideas, all help is appreciated.

Windows 7 Ultimate 64 Bit
Gigabyte G880GM UD2H
AMD Phenom II x4 955
AMD Radeon 6870

A:USB Device not recognized

Test the device on another PC. Then you will know if you have a PC or USB device issue.

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Hello All - I have a Latitude D600 that is fairly new and I get an error message randomly throughout the day. The message reads "USB device not recognized - one of the USB devices attached to this computer has malfunctioned and windows does not recognize it"

The only USB port being used is for an optical mouse, which I have replaced and the error keeps occuring. Any ideas?

thanks in advance!

A:USB Device Not Recognized

Hmmmmm... Sounds like a call to Dell might be the answer to this one. Un less you have had other things in the past pluged into any of the USB ports then that is the only thing I can think of that would cause that problem or it could be that the computer was part of a net work and reading it from there but that Idea is very far fetched. I would call dell or look on ther site in the FAQ section and see if anyone else has had the same problem. This sounds like a dell thing to me. I could be wrong though Its a thought

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Hi I'm trying to transfer files to a USB device and it is all of the sudden "not recognized" It was working before and suddenly stopped. It used to come up as F:
I have tried uninstalling and reinstalling in Device Manager, and moving usb ports.
All help is appreciated.

A:USB device Not Recognized

can anyone help?

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i have a problem with my HD. After a computer crash while i was playing a game, i lost my USB disc in which the game was installed. I've had this problem before and i knew exactly what to do. Pretty much i did what is written in this post: http://forums.techguy.org/showthread.php?t=607173&highlight=usb+device+-recognised

i used the set devmgr_show_nonpresent_devices=1 command, and disabled all the phantom devices. However this time it didn't fix my problem. My USB disc is still not recognized, and even a second one that i have and wasn't installed at the time of the crash is not working. Same for my external cdrom (it has a firewire port so i don't care, the HD doesn't however).
I've removed EVERYTHING related to the HD and the USB devices in the device manager, even the Hub Root USB. But STILL, the disc is not recognised. Maybe i missed something, somewhere?

thanks in advance
btw the hd is working fine in another computer. but the usb port looks damaged (?). If i plug my mouse in it, it won't work. The USB HD doesn't work no matter in which USB port i plug it....

EDITk found it... i had to power off the computer for some time... and that was all!

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Hello, I have a desktop computer with xp 2 installed, 250 gb seagate hdd, intel dual core proccessor, asus k5kpl motherboard. I have 4 ports. Few days ago I bought nokia c2-02 and also bought a data cable. When I attached it to the computer it said "Usb device not recognized". Coudn't understand was it a data cable or phone problem ?? Few days later I bought a bluetooth device to connect my phone but I got the same message "usb device not recognized" when I connected the bluetooth device. I tried all 4 ports. But my pendrives and memorychips are working fine. Have no Idea what's going on. Please help me. I wanna know what is doing problem? Is it the devices or my computer ports or others ?

A:Usb device not recognized

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I use an external hard drive to back up my computer. I plug it in and it takes about 30 minutes. Today I plugged it in and immediately got the message "USB Device Not Recognized." I disconnected and reconnected with the same result. I updated the driver in device manager but was told I had the most recent update. I've tried everything I can think of and my PC still will not recognize the external hard drive. What could be wrong?

A:USB Device Not Recognized

Please download MiniToolBox  , save it to your desktop and run it.
 Checkmark the following checkboxes:  List last 10 Event Viewer log  List Installed Programs  List Users, Partitions and Memory size.
 Click Go and paste the content into your next post.
 Also...please Publish a Snapshot using Speccy - http://www.bleepingcomputer.com/forums/topic323892.html/page__p__1797792#entry1797792 , taking care to post the link of the snapshot in your next post. 

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i have a hp pavillion dv8301nr windows 7 (64bit) 7600 rtm, allthou this happens in every version, i have a amd turion 64 ml-34 processor, and phenix f.54 (latest) bios, and i can only suspect i have the latest chipset drivers, i installed them from hp site, if someone knows a place where i can get the chipset drivers please provide me with a html link. i dunno which mobo i have i think ati something. anyways my problem is...

i have 4 USB ports, 3 are 1.1 and 1 is 2.0, no matter what i try to connect, the windows detects the device but says unknown device detected? i have tried everything to fix this, plz help, in device mngr it shows 3 usb communication processor controllers 2 are OHCI 1.1 and one is EHCI 2.0 under them i have 3 usb root hubs, when i plug something in an extra one pops up for every device and is named unknown device with a yellow exp. point. PLZ SOMEONE HELP ME, maybe you can find my mobo chipset drivers for me, i am not sure but i think ati makes my mobo since the internal gfx card is a 200m express ati.

A:USB device not recognized!!! PLZ HELP

plz help someone enyone?

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I posted a similar message under Hardware, but am getting no responses, so thought I'd try here.

Main question: What would cause a relatively new HP Media Center computer to recognize other things inserted into any of the USB ports in the front (for example, a jump drive), but NOT recognize one device (a Lowrance iWAY 500c GPS car navigation device) that is readily recognized when it's plugged into a different computer?

The HP computer is a friend's. The "different computer" is mine, a custom machine from Puget Systems with a P4 on an Asus MoBo. On the friend's computer, we get a "bubble" message from the taskbar to the effect that the device is not recognized -- so it knows something is plugged in, but apparently doesn't have the driver for it. Her system is running Win XP and I assume (but don't know for sure) that she's kept up with Windows updates.

When I check MyComputer, the Lowrance isn't on the list. In Device Manager, it's listed as "Unknown device".

I'm wondering about things like the HP lists a pot full of drives because it has all the camera card slots, etc. in the front panel (I think the drives go all the way up to J:, almost all of which are "removable drives".

Any ideas?

A:Device not recognized

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First off i have to say i know VERY little about computers. this morning when i turned my computer on i couldn't get my external hard drive to work . I kept getting the message USB Device not Recognized.....One of the USB devices attached to this computer has malfunctioned and windows does not recognize it. I then unplugged everything from my usb ports and figured out that the only things that would be recognized were the mouse and the keyboard. I have tried the system restore but that has not helped. The Device Manager Just says No drivers are installed for this device even though i have (up until this morning) been useing these devices with no problems for months.

A:USB Device not Recognized

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This is getting irritating enough I am tempted to go back to XP. Every time I plug in a USB device to charge it, for example my GoPro helmet cam, or just have an empty USB cable plugged in to one of the PC's ports and leave it on my desk so its ready to plug something else - I get that P.I.T.A. message popping up every couple of seconds.It won't go away either, it just keeps popping up again and again.
I have the all the latest updates, including the latest service pack. I powered off the CPU by unplugging it for 5 minutes and it still pops up whenever I plug in a cable or a device like one of my pocket video cams just to charge it.

Is there a fix for this or not?

A:USB device not recognized will NOT go away

Check your USB controller settings in Device Manager:

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