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PC doesn't reach POST every now and again

Q: PC doesn't reach POST every now and again

Hi there,

This has been my first PC build, which was a pretty daunting task for myself. I will list my specs below that SysInfo retrieved.

The title basically explains it, every now and again, the PC will not show the ASUS Bios logo. It will not get past this black screen stage until I hold in the power button to turn the PC off and then boot it back up again. My keyboard and mouse have LED's in them, so I know if the LED's light up, it will boot normally. If they don't light up, I know I'm going to have an issue.

Being a ASUS P8Z77V-Pro motherboard, red LED's light up one at a time to (assumingly) test each component for errors. Whenever the computer has decided to do it's weird not-reaching-POST thing, the DRAM_LED is lit solid red, and will not move on to any component no matter how long you wait. I don't know if I have faulty RAM, a faulty motherboard (which I'm quite frankly dreading, and I mean honestly dreading, I've got too much pressure on myself at the moment), or some issue.

I'm not an expert, but I'm fairly clued up on technical jargon. I do not believe I've made any mistakes whilst building this PC, but I hope someone can help me here.

Many Thanks,
George *****
a.k.a. DocBox


Tech Support Guy System Info Utility version
OS Version: Microsoft Windows 7 Professional, Service Pack 1, 64 bit
Processor: Intel(R) Core(TM) i5-3570K CPU @ 3.40GHz, Intel64 Family 6 Model 58 Stepping 9
Processor Count: 4
RAM: 15828 Mb
Graphics Card: AMD Radeon HD 7900 Series, -1024 Mb
Hard Drives: C: Total - 122001 MB, Free - 37613 MB; D: Total - 953866 MB, Free - 289849 MB;
Antivirus: avast! Antivirus, Updated and Enabled

Preferred Solution: PC doesn't reach POST every now and again

I recommend downloading and running Reimage. It's a computer repair tool that has been proven to identify and fix many Windows problems with a high level of success.

I've used it in the past to identify and fix everything from blue screens (BSOD's), ActiveX errors, corrupt files and processes, dll/exe/sys errors, recover lost memory, Windows update problems, defragging, malware removal etc.

You can download it direct from this link http://downloadreimage.com/download.php. (This link will automatically start a download of Reimage that you can save to your computer.)

A: PC doesn't reach POST every now and again

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Ok. I've recently tried replacing the generic PSU that came with my computer (Advent PQD5002) with a Corsair VX450W, which is supposed to be (I think?) a fairly reliable PSU brand, in readiness for attaching a new graphics card to the motherboard.

However, when I tried fitting it, the computer refused to start up. However, the light at the front of the tower lit up, and the lights on the keyboard started flashing. This seems to suggest that it was delivering power, but the monitor didn't show any change, and the mouse didn't respond.

I'm fairly sure all the cables were attached properly, although a friend who has built many computers before is coming over tomorrow to check them. Is there anything else that could be causing this? Hopefully the PSU isn't broken already...

A:Solved: New PSU stops bootup (doesn't reach POST screen)

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Hello. Here's my problem:

I got home from work one day and my wife tells me the computer "just stop working". Confused I ask her how? Unable to tell me, I decided to turn on the computer. Unfortunately, nothing happened. Since I believed the prob was the power supply, as the fan was not turning, I bought a new one and tried again. Still nothing happened. So I decided to try a new motherboard, Biostar M7VIG 400. Still no luck. So I tried a new CPU, AMD Athlon XP 2400+. Now the PC has power, the keyboard lights up, the DVD and DVD-r drives respond, and the CPU fan runs but it does not continue to POST. Everything stops there, the fan continues to run, an amber light on the case stays lit but nothing happens. I've tried disconnecting everything, hard drive (which is empty but that's another story), DV, DVD-r but no luck. And this is where I ask for your help. Anyone have any suggestions? Thanks!

A:Unable to reach POST

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I have a just installed a new PSU, the Seasonic MD12 and upon installing it in my system which worked before now, I can't even get to the post screen, it simply starts to boot, the cpu and psu fans spin, then it stops, then nothing no beeps noises or anything just goes dead, the mobo light is still on and a few leds are showing but other than that, nothing.

I've tried the PSU in another machine and it works fine and I've also tried removing all connections from the mobo except the 8-pin and 24-pin power connectors, keeping in the video card, soundcard and cpu with just one stick of ram but still the same result. I'm pretty worried about this as it all worked fine the other night but now I've replaced the PSU it's died although the PSU works fine in another comp.

I'm really hoping it's not a problem with the mobo so if anyone can come to my rescue that would be fantastic as I had planned to work on a new project this week

A:Urgent help needed - Comp won't reach POST, just shuts down

Seasonic is a great power supply we use frequently in new installs... We have never seen a failure...
Consider other events... could your hard drive have gone bad? Do you have all the cable connected properly.... Remove and reseat to test.
Consider damaged cables, damaged sockets, damaged memory, damaged hard drives, and something not plugged in at all, such as the CPU fan. Double check everything you have done... when rested and no longer stressed.
Then get back to us with the good news that everything works, and what you figgered out that made eveything happy.

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I have a U410 that is only two months outside of its warranty and now it fails to boot, it powers on, but nothing comes up on the screen. The fan does start. Occasionally if I keep trying it will work and boot, but over the past two days this seems to have gone from bad to worse and now doesn't boot at all. I opened it up and checked all connections were properly seated. I tried disconnecting the HDD/SSD/battery to see if it would at least get to the BIOS if I did that, but still same symptom: powers on, fan starts, but nothing bot a blank screen. Has anyone else seen this? Any thoughts? I'm dissapointed as it doesn't seem to have occured for any reason (no drops, wasn't moved in months, etc) and this tarnishes my impressions of Lenovo.  

A:U410 fails to boot 9 times out of 10, does not reach BIOS or POST

erentz wrote:I have a U410 that is only two months outside of its warranty and now it fails to boot, it powers on, but nothing comes up on the screen. The fan does start. Occasionally if I keep trying it will work and boot, but over the past two days this seems to have gone from bad to worse and now doesn't boot at all. I opened it up and checked all connections were properly seated. I tried disconnecting the HDD/SSD/battery to see if it would at least get to the BIOS if I did that, but still same symptom: powers on, fan starts, but nothing bot a blank screen. Has anyone else seen this? Any thoughts? I'm dissapointed as it doesn't seem to have occured for any reason (no drops, wasn't moved in months, etc) and this tarnishes my impressions of Lenovo.  Try running with one memory module at a time and see if you will be able to at least boot.

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The power icon is showing 99% and when I hover over it there's a message "99% available (plugged in, not charging") (1) The phrase "99% available" means to me that it's only 1% charged. Is that what it's really telling me? The colour of the icon is green which suggests to me that it's not only 1% charged.It was plugged into an extension satellite hub (which it was sharing with another laptop but not now) and when I plugged it into a socket, there was no change. (2) Should it ever show 100%? 

A:My laptop doesn't reach 100% charged.

You dont mention what model laptop you have.  Regardless,  when it says "plugged in, not charging"  99% available.  It means its 99% charged not 1% charged.  Most models if either charging threshold OR conservation is turned off it will not charge unless you are below 96%.  Then it will charge to 100%.  To confirm you can unplug laptop and use it until the battery shows 95% then plug it in.  Depending on model if you have either charging threshold or conservation mode on that number may be different.  For example if conservation mode is on I believe it wont charge until below 55%.

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I have a Dell Vostro 1510 running Vista Home Premium. I started noticing that when playing games sometimes performance would go down considerably which coincided with the laptop being considerably hotter to the touch. I installed speedfan to check if this was true and as it turns out the gpu can reach up to 95C without the fan going full speed (I can hear it run but not full speed). The fan might reach full speed but not necessarily when the temperature is at is highest which means that the laptop usually overheats when playing videogames. I'm not sure if this has happened since I purchased the laptop or after upgrading BIOS. I currently have the latest BIOS from Dell (A15), and the latest reference drivers from Nvidia for the videocard which is a geforce 8400M. Can it be that the overheating is due to using the reference drivers and not the manufacturers? I used the reference drivers because Dell hasn't updated videocard drivers for almost a year.

A:Laptop overheats and fan doesn't reach full speed

What games are you trying to play on that computer? Hopefully they are not that demanding because the Vostro isn't great for newer games. Also make sure that you are not using it on a soft surface (bed, rug, blanket, etc).

The drivers for your video card should not interfere with your fans since it is all integrated into the same motherboard.

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Morning!  I have a yoga 900 that doesn't want to boot for the past 12 hours. I tried to restart it several times and the screen remains black. I am leaving it open now to have the battery drained and restart as I read in some responses - but the battery seems to have a life of its own now! Any insights? i am trying to contact the customer support without success. It was easier to contact the best but squad than Lenovo itself. A bit disappointed by that. 

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Parts List:
AMD CPU FX series
ASUS AMD Motherboard
1 SSD for Booting
2 Hard Disks for storage
GTX 970
750 W Power Supply

My problem is that I hit the power button on my computer it turns on but with fans at 20% and doesn't show anything on the screen, not even bios. I have already replaced the power supply and the motherboard thinking they were killed by a power surge but no luck. I wanted to consult people more knowledgeable than myself before I spend anymore money. Any advice would be great!

I have replaced the motherboard and power supply and tried changing ram and removing ram altogether. I also switched around my hard drives and ssd to try to get to BIOS.

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Parts List:
AMD CPU FX series
ASUS AMD Motherboard
1 SSD for Booting
2 Hard Disks for storage
GTX 970
750 W Power Supply

My problem is that I hit the power button on my computer it turns on but with fans at 20% and doesn't show anything on the screen, not even bios. I have already replaced the power supply and the motherboard thinking they were killed by a power surge but no luck. I wanted to consult people more knowledgeable than myself before I spend anymore money. Any advice would be great!

I have replaced the motherboard and power supply and tried changing ram and removing ram altogether. I also switched around my hard drives and ssd to try to get to BIOS.

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Our email is hosted through fatcow. I have it set up to come into Windows Mail. Yesterday fatcow had a server crash, subsequently my email did as well. Today, they report that the problem is fixed but I am still "out".

You can email me and I received it, if I reply it reaches you successfully.

If I compose a new email to you, windows mail successfully sends it, the email is put in my sent items, however you never receive it.

All of the settings are set up correctly according to fatcow support. They are able to send new emails from the webmail account so they believe it to be a problem with windows mail.

Things I've done:

1. I've removed the account from windows mail and started a new one.
2. Rebooted several times
3. Changed incoming and outgoing ports to all possible options
4. Checked ports on server to make sure it's not being blocked
6. Checked smtp file, no errors
7. Tried changing incoming and outgoing pop.domain.com/smtp.domain.com, mail.domain.com/mail.domain.com, pop.fatcow.com/smtp.domain.com

If anyone has experienced this or has any ideas I would greatly appreciate your help as I am ready to stab myself in the eye


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Sys: W2K, SP4; IE6, 512megs SDRAM, 1.2 gig AMD Athlon CPU, ECS K7SEM mobo, Award 6 Bios.

Problem: Upon system startup, power comes on, but nothing else--no beep to indicated the system has entered POST. After several tries, it will finally beep and the harware will come to life.

Once working it will usually keep working as you'd normally expect as power cycle to work. It's mainly after sever hours of being off and now always, over night that the error occurs--no power to the hardware, until several tries.

History: Recently been hit with many Trojans & viruses. They've made it past my NAT router, past my software firewall and have taken apart my McAfee AV program. But they have been contained, before they could do any damage, so I hoped, except I just got a bounced email yesterday, that shows I have been spoofed and my address book copied and is being sent to. So a Trojan got in.

I have SpyBot S&D, Ad-aware, McAfee VS8, two firewalls going. I have cleaned all the viruses/Trojans off the system, out of the registry with S&D, Ad-Aware, VS8, Trendmicros VS and Pandasofts VS programs. As well as using CWShreeder, MRU Blaster, BHO removers, HiJackThis.
The system is clean. no hidden files, every thing ok. It doesn't seem to be an OS problem.

A week ago, my power supply went out.
I replaced it.
It's since replacing it and getting all the viurs/trojan hits that the problem has begun.

I thought it might be the new PS, so I put in another, ... Read more

A:pre-POST failure. no beep, sys doesn't go to POST

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NO good deed goes unpunished
I thought I'd help my fatherinlaw with his older 'puter Using asus p5-a -b, AMD K6-2 550 @ 450 mhz (too many errors @ 550 on three similar machines), I decided to help by installing a USB add-on card so his new copier/printer would connect to the computer. slick install. It picked up the printer and away we went, sorta...
Half way through the secondary software installation, It freezes.
Now it won't boot.. Please insert system disk when asked to boot C,A
during POST, it does not even try to detect the Primary Master.
BIOS recognizes it and under auto assigned the proper size, cylinders, etc.
Using a win98 boot disk, I can see, open .txt files. on C:
I looked up and executed Clear CMOS (CLRCLK in ASUS speak) with the battery out. Tested the battery, it is good. Then I treid the BIOS detect HDD utility. Results above.
The disk is a 20G and it reads (under dir command) 16G free.
These facts make me think formatting is not necessary.
I changed IDE cables
Once, under Win98 bootdisk, it told me C: does not appear to have a valid partition... , so I tried fdisk and it said C: was not a valid drive
Any ideas?

A:POST doesn't even try

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I have an HP 8300 Elite Small Form Factor Desktop Computer, Intel Core i5-3470 3.2GHz Quad-Core, 8GB RAM, 500GB SATA, Windows 10 Pro 64-Bit.

The problem is the computer will not Post and the fans will spin very fast for few seconds then stop. Followed by power light flashing and a series of four short beeps (repeats 5 times). After the beeping stops the power light flashes continuously.

I bought and replaced Power Supply, Ram and battery for the CMOS with no avail. I also tried a different HD, removed, clean and install a processor but the problem still persists. Also, the motherboard components show no physical damage.

What else can I try to solve this issue?

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So , i had a problem with my computer where it powered on then shutted down repeatedly , found out it was an overheating issue so i placed thermal paste on the cpu and everything went fine , i used the pc for like 2 hours to clean up hard drives , then the next morning , i tried to power it on and nothing on the screen , the fans spinned and all seemed to work fine but no boot or post .
searched on the forums and found nothing

config :
Intel core i3 3.3Ghz
Intel hd Graphics
Kingston 4gb ram x2

sry for my english

hope you can help

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In the last month i had occasionally a BSOD whenever the pc was inactive(OS is Windows 10).
I decided i was going to change the HDD in a few months(as an analisys confermed it had some errors because of age).

The situation changed 3 days ago: in the morning i started the pc and (before booting) it automatically started to diagnose and repair the system(don't know why).
After that it restarted and the nightmare began;now the pc continues to restart every ten seconds while showing on screen the BIOS (without text).

Here are the parts of the PC

PSU:Corsair RM 750W
GPU:Nvidia 1070
CPU:Intel i5 3330
RAM:8G 2Rx8 DDR3 1600 U
MOBO:Gigabyte GA-B75-D3V rev 1.2

After some researches online i found out that the pc doesn't POST,i tried many things,included the ones i ffound in this list

This are the results:
1)The manual doesn't say anything of importance
2)All the cables are correcly connected
3)I am doing breadbording on a non conductive surface
4,5)Checked,the results are the same if i use the integrated graphics or the old 950 or the 1070
6)I can't access the BIOS and i only have one stick of RAM.I tried all the 4 slots
7 to 10)OK
11)Ok,photo provided
12 to 14)OK
15)Breadbording so ok
16 to 21)OK
22)Tried integrated graphics,behaviour doesn't change

Most importantly:
I cheked the mobo carefully,no signs of damage appear.
With only CPU installed,i hea... Read more

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I recently tried upgrading my Asrock K7S41GX motherboard from a AMD 800MGZ CPU to a Athlon Xp 2400. When I try to boot up now it doesn't POST at all. I checked Asrocks website and looks like I may need to update the BIOS. Whn I try to put the old AMD back in I get the same results (it doesn't POST). I tried resetting the BIOS but noting. Does anyone have any ideas?

A:System Doesn't POST.....

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Last morning I tried to turn my PC on but nothing happens, nothing is shown in my monitor. My CPU starts but no POST screen appears. Last month it happened & I opened the CMOS battery for 5 mins then it boot normally.

Now openning the battery is not working. CPU & Monitor lights are on but BIOS, POST etc doesn't appear. PLEASE HELP.

A:POST Screen Doesn't Appear-PLZ HELP!!

Is it an e-machine by any chance??

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Hello. I'm not entirely sure where to go for help at this point, so I thought I'd try looking for help here. I've got a couple problems with my PC that I need help troubleshooting since I'm not experience enough to do it myself. Also, I couldn't think of how to title this thread to convey the best message in the least amount of words, so I apologize if it's misleading.

It started off with me installing a new PSU, the EVGA SuperNOVA 750 G2. I put it all in, and wired it all up, but I made a stupid mistake by using the same wire that my previous PSU used to plug in my SATA devices. It made since at the time since the old cable fit better, but upon further inspection, the two SATA power cables used different pins when plugging into the PSU. Long story short, my SSD was burned and no longer works. I have reason to believe that my HDD no longer works as well, and now I'm starting to worry that my Motherboard or CPU is also fried. I started my computer up and it went to POST just fine, although it did actually recognize my disk drive, which was still wired to the same wire that burned my SSD. I then turned it off and let it sit overnight since I assumed I would just need to buy a new SSD and possibly a new HDD. However the next morning, after I had unplugged and removed all my SATA devices (being the two storage devices and a disk drive), I turned it on and the motherboard did not POST, and did not even send any signals to my monitor. My motherbo... Read more

A:Motherboard doesn't POST

You need to get yourself what is called a multimeter to test your psu. Make sure it is digital. You can buy one at Radio Shack or Sears/K-Mart for little money.

I bought my Craftsman a few years ago at K-mart for $22.00 and it works great.

There are numerous You Tube Videos that will show you how to test your power supply as well as online articles. The rails you want to test are the +3.3V, +5V, and the +12V. Here is a good answer to the ranges that are considered desirable: http://www.tomshardware.com/forum/338363-28-what-correct-voltage-values-power-supply

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I turned my computer off last night and tried turning it on this morning but nothing. The computer doesn't even perform POST. I unplug all of the components that are not vital to the system. Tried a different video card but still nothing, most likely the motherboard but any other suggestions?

A:Computer Doesn't even POST.

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My computer won't POST. I plug my RAM, CPU, PSU and let my Mobo lie on static paper, connect my keyboard and monitor, and my computer will still not post. All my parts are brand new.


Mobo : Asus P5GL-MX
CPU: P4 S775, 2MB cache, 800FSB
RAM: 2x 512MB PC3200, 400mhz
PSU: standard 20pin + 4pin 420W PSU

I'm leaning towards a problem with the motherboard, but i have a hard time believing that it won't work, straight out of the box. I ruled out the possibility that the connection are properly made because its kinda hard to miss where the power supply goes.

Can there be a problem with the thermal greese? wouldn't that cause the computer to shut down?

anyway, ill appreciate all the help

I have seen this thread somewhere on this site before, but the problem was never solved

A:Computer doesn't post

Can you give more details about what happens when you power up?

Do you have any lights on your motherboard?
When you hit the power button, do fans spin?
Any beeps?
Absolutely NOTHING?

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Pc seems to be booting but doesnt post anything to the screen. I bought a new ddr3 ram and a used motherboard.
What I tried
-clearing cmos
-removing battery/replacing battery
-plugging to the motherboard and gpu
-checking the sticks one by one on different slots

The psu, cpu, gpu and the monitor are fine because I checked if they worked on my old mobo so it seems like its the motherboard or ram. Any ideas on what else I can do before taking it to the repair shop (trying to avoid that due to covid).

Pc specs :
-q9550 cpu(cooler master hyper tx2)
-gtx 750ti 2gb
-gigabyte ga-g41mt-s2p
- 2x 4gb 1333 mhz ddr3 (cmx8gx3m2a1333c9)
-mx500 ssd
-corsair cx 450

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Hi all,

Hoping somebody may be able to help a newbie out with an issue I'm having.

I have a computer that won't enter into it's post. When powered up, the fans all run fine and it will even display video, but it just freezes at the "Biostar" display screen.

Motherboard = Biostar M7SUA

This started happening after a software upgrade that required a reboot, but I have a suspicion that this is more of a hardware problem rather than a result of an upgrade to software since it doesn't even go into post. However, the computer worked fine up until this reboot was done.

Wondering if this is a possible bios issue and how to proceed. Any thoughts or suggestions?


A:Computer doesn't go into post

Hi Pablo76 and welcome to the TS Forum :wave:

I would disconnect the IDE devices first and see if the PC boots, I have seen this happen when the HD is going or gone faulty.

Would you please take a few moments to read the following. It will help to make your Techspot experience a more pleasurable one.

Techspot FAQ.

A message for all newcomers.

SNGX1275`s A guide to making a good post/thread.


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I posted in malware logs but don't see it after 1 hr. Should the post show or will it take 3 days? Or maybe the upload was not successful? I did not receive email confirmation.

A:Post doesn't show??

It's there: http://www.bleepingcomputer.com/forums/topic433408.html/

Since that is a very busy forum it moves pages quickly. The malware team works from a queue so they will see it reagrless. You will get a reply, Please be patient.

If you want to quickly check on all your topics or replies, go to your member name in the upper right corner and click the arrow. There is a pull down menu. Choose My Content.

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I have an Dell Optiplex GX260 that isn't going past POST. It ends with "press F1 to continue, F2 to enter SETUP" (or something similar) Pressing F1 does not good, it just repeats the phrase. Entering SETUP shows that the HD and CD is unknown. The date is correct so the battery is probably okay. The HD is probably wiped, but I can't be sure at this point. (The other HDs on the Optiplex computers we received were all wiped.) With the CD listed as unknown, even if I got the computer to move forward, I would be unable to install XP. I tried changing the HD but it made no difference. I also checked to see that all cables were connected. The RAM was seated correctly and worked in another computer.

I won't be back at PCs4People until Thursday, but any ideas you have for me I will try to implement then.

A:Doesn't Get Past Post

Welcome to BC CaroleAnne

Sorry to hear about your problem, you have come to the right place - I'm sure we can shed some light on your problem!

Just some things to consider:
- How long has this problem occured?
- Any strange messages prior to the comptuer failing the POST?
- Did anything strange happen prior to the problem?
- What operating system are you using?
- Does the computer make any beeping noises?

Am I right in thinking that your computer has a set of four lights on the back panel labeled A, B, C & D?

Hope this helps so far!!

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Hi All!

I have a very strange problem with an imedia 1529 running XP Home.

It was brought to me because it wasn't getting beyond fans starting, disks coming up. There was no 'power on' beep.

I figured it was the motherboard and probably the graphics card fried, and sure enough when I fitted new ones and cleared out the dust which caused the problem it fired up properly. I ran it for a couple of days and called the owner to collect it.

After a couple of days' use it seized up again, and after some cleaning of contacts and reseating cpu, memory etc, and putting arctic silver on the cpu it restarted.

I have now got it working three times, each time for several hours, and each time when it was returned to the owner it refused to start, with the same symptoms (no beep, etc). I have tried running the board outside the case, with no extension cards, to see if it was a shorting problem (it wasn't), removing the cpu, memory to see if I get beeps (I don't), and trying another PSU, resetting the bios and renewing the battery, all with the same results. At present it's still not booting at all.

Am I missing something Really Obvious?

Many thanks for any input on this.

PS I have very little hair left...!

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I have a PC with a Gigabyte GA-8SGXL MOBO and a P4 2,4Ghz. It worked fine until it crashed last night. I was just copying some files and suddenly the PC stopped responding to anything. It seemed like a regular XP freeze. I turned it off and can't get it running since. When I hit the power switch, the PC powers up (fans, HDD, DVD-drive all running) but nothing appears on the screen. My monitor just displays "NO SIGNAL". It doesn't even give any audio signals.

I tried everything I could think of, but nothing helps.
-I removed all peripheral and PCI cards
-cleared CMOS
-Tested the video card in a different PC (works just fine)
Any ideas??

A:MOBO doesn't post. What could be wrong?

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Hello, I'm running Win Vista HP x 64. My computer starts up fine (lights/fans work) but I can't get to the post test nor does my keyboard or mouse work. just a black screen with no video display.

Some other thread said that I had to pop out the mobo battery to reset the CMOS but I have absolutely no idea where they are on this mobo. Here are some shots of my motherboard. Maybe you guys could tell me where this battery is supposed to be. ASUS, btw.

general view

below gfx card

more above gfx card

A:Computer doesn't get past POST

I get no beeps, all is black. Was working perfectly yesterday. *scratches head*

Maybe this is not the problem? The CMOS? I just want this fixed. I got a raid tomorrow. Bit o help for a comrade?

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Well, everyone said it was easy, so I built a computer. Problem? It doesn't post. I've checked the basics, but beyond that I don't know where to start. Power supply works. LED on board lights up. Fans spin. No beeps. Nothing. Ideas?

A:Solved: New Computer Doesn't Post

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Hi guys, having a rather odd and frustrating problem.

I purchased a new CPU cooler and had to remove the MB to fit it. Everything went fine but when I plugged it all back in the PC powered on, fans and drives started spining but nothing displayed on the monitor (no error beeps either). After a bit of screwing around I figured I damaged the MB while removing/fitting the cooler so I went down the road and bought a new MB. Went through the install process of fitting the new board, but once again same problem! Power but no display, monitor light just blinks.

I tried a different PSU, RAM and video card but nothing helped.

The only thing I haven't changed is the CPU (don't have a spare). Could the CPU be fried? I don't see any scorch marks or smell anything. When I insert the CPU without the heatsink I can feel it get hot and then cools when I power the PC down (only did for 10 seconds so I don't really fry the CPU). To me this "indicates" that the CPU is ok, or will the CPU continue to heat even if it's dead?

Any suggestions/ideas?

Oh, one odd thing I noticed immediately after fitting the cooler in the original MB was after I powered the PC on the DVD drive made a strange sound and the light blinked. I pushed the eject button but it only came out half way and then went back in. Never seen that before.

A:PC powers on but doesn't boot - no POST

Have your tried a new MB? maybe somehow if broke something in it. i don't really think your cpu is dead, i have had old processors that i bent pins and dropped and spun around but they still worked when i built older system for family * pins were bent back straight just so everyone know* i would think that something is wrong with your motherboard but thats just me i could be completely wrong. hope you find the problem though

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Recently I got a new monitor for my motherboard (Asus M5A78L-M) due to the old one dying, the reason was that there was no posting to t he screen. It was an OEM, Pegasus motherboard that usually dies out sometime anyway, so replacing it was probably sitll a good idea.
After replacing it, putting in all the cables and things of that matter, it still won't post. I've tried switching the RAM into different slots, but still nothing will show up on the screen.
Everything else works fine, the fans work and the lights are lid up where they should be. THe DVD-Drive does open, but closes a couple of seconds afterwards. Also, other things like a mouse and keyboard light up for a second when it turns on.

I really need to diagnose the problem before I spend more money on this stuff.

A:New motherboard still doesn't post to the monitor?

I would start by checking the monitor and the cable. Switch both out with known working monitor/cable to see if you get a response.

For clarification, did you only switch out the motherboard or did you buy a monitor as well? We need to know exactly what you're trying to do to provide the best answer. I think you're saying you replaced the mother board and nothing is showing up on the monitor, correct?

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Occasionally when I boot up my computer, it doesn't get past the MOBO screen and POST, after I press the reset button once, it usually works. I don't think I have had to press it twice. But like I said, this doesn't happen often. USUALLY it happens when I turn on my computer after it is shutdown for an hour or two (or overnight).

I don't know what is causing it to hold up but it's quite aggravating.

If anyone has anything to say/suggest let me know.

A:Computer doesn't POST occasionally

I'm not sure I understand. Could you clarify?

POST is the Power On Self Test. It happens first. The system will normally beep once if POST is successful.

Then the BIOS or UEFI loads and runs it's routine. (which do you normally have?)

Then the operating system is started ("Starting Windows").

Where in this process does it freeze?

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Hi all. So I have a custom computer i built a couple of years ago. Yesterday I purchased a new case fan. Before installing the new fan, I blew out the entire computer. I got everything good and proceeded to try and power up. The tower seams to come and run fine but i'm not getting anything on either of my monitors ( i've tried both on their own and still nothing ). This unit was running totally fine until I took it apart for cleaning and the fan. So far I have tried resetting the cmos, reseating the ram, and GPU, trying to boot with 1 ram. But nothing has worked, I cant get anything on my monitor. I have checked all of my connections and it should be fine. I hope we can narrow this down to the GPU so i can just replace it. If anyone could help me in any way it would be greatly appreciated. Thanks!

A:Computer Starts, But doesn't post on monitor.

If the board has a video chip, take the card out and try to boot using that.

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I've had a problem over the last couple weeks. My PC doesn't start easily. I have to hit the power sometimes once and it starts or I have to power down (6 secs on the power button) and repeat this several times before it posts to bios and starts. The PC power will start, the fan runs, but it doesn't consistently start. IF IT DOES START UP IT IS STABLE AND RUNS OK.
I have a Gig P35DS3R and am running Vista with current updates. Bios is version 12 beat (Award I think - Gigabyte's version). Today no matter how many times I've booted the PC does not post. HasaAnyone seen this before and can help with diagnosis? I'm thinking its the mobo, versus the PS.


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If I make use of my DVI output, my screen goes blank after POST. It also seems like it never loads windows at that point. With my VGA output, screen doesn't go blank and Windows loads??? I've installed the LATEST drivers and it still occurs. I also used the same graphics card in my last build with a DFI Lanparty MB and DVI worked fine. Can someone lend me some assistance? Thanks.

Current Config
Nvidia 6800 OC 128MB AGP
ASUS K8N-E Deluxe NF3 Chipset
AMD 64 3400
2X512 OCZ

A:Help - DVI outputs a blank screen after POST, but VGA doesn't...

Also... If I plug a DVI to VGA adapter to my dvi output on my graphics card and utilize the vga cord, everything works fine??!! Any ideas?? :knock:

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The last post on this subject, as near as I can see, was in 2007.
My add, remove app doesn't work. Nothing ever populates. I have XP Pro SP3. Everything else works. I've tried all the usual fixes.
I'm stymied.

A:Old topic, new post add, remove cpl doesn't work

Try this: Add/Remove Programs tool displays installed programs incorrectly

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Someone has handed me an IBM Thinkpad, Model T43 (Type 2686) that doesn't proceed past the initial BIOS/POST splash screen with the IBM logo. It just sits there. No beeps, not errors, not reaction to keys pressed (like the IBM Access key). I've even removed the DVD and HD, and removed the keyboard panel to clean the inside out (very very little dust to speak of; clean overall) and re-seated both sticks of RAM. Same problem persists, even without the drives in their bays.

I'm not sure what to try next but am leaning towards a problem with the motherboard. I'd like to exhaust my options before declaring a replacement board to be the solution (though it probably will be).


A:IBM Thinkpad (T43) stuck at POST, doesn't proceed further

I don't see what else you can do if you can't get far enough to boot anything.

Except perhaps a 'recovery type' Bios flash if that laptop can do it, the sort where it finds the Bios file automatically if you press the correct key combination.

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Hi guys

My brothers computer which came with 8GB of ram, which posted fine when we first bought it. However when i installed a new power supply for( Antec 650W Earthwatt) and powered up, the computer wouldn't boot. So again i tried doing two slots 2GBX2 so 4gb, and its posts, but the problem is when i put all 4 sticks for 8GB total it doesn't.

I tried all the dimms in 2 stick config, and the dimms are fine, its when i have all 4 sticks in with the new power supply is when the computer won't post.

Worst problem is that the MB is MSI Aspen and HP locked MB, so i can't do anything.

So someone please help me.


A:MSI Aspen 1.0 MB (HP9500y computer) 8GB RAM, doesn't POST

anyone help?

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My laptop has crossed it's warranty period. One fine day After updating drivers when it chose the option to restart again, the notebook never restarted.. I've done everything to get it started.. I guess it'll just remain a black dumb box. What should I do?

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I have an oldish athlon 64 on an Asus M2V motherboard and have just upgraded to 4GB (2x2GB) at 800mhz.

For some reason, the BIOS and W7 says that there is only 3.25Gb although windows does say "4GB (3.25GB usable)". The manual and "Tech Specs" on Asus' website says that it can support up to 8GB so I don't understand why it isn't recognising it. Any ideas?

Also, it is Win7 64bit Pro.

Another also, the pc sometimes doesn't POST when restarting and just sits there with all the fans spinning, but after a few tries it POSTs and goes into w7 with no trouble. I did memtest on the ram and it errored with both sticks in one way but not the other and so I currently have them in the way that they are working.

Thanks for your time

A:Windows 7 reporting 3.25GB when got 4GB and sometimes doesn't POST

There is nothing wrong with the read out you are getting on your RAM as the missing amount will be in use by graphics or running processes.

Your boot problem is probably an early sign of a failing hard drive or RAM. Check your RAM configuration in the motherboard manual, there is often a right and wrong way to install the sticks.

The best test for the RAM is to run the PC with one stick at a time for several hours using memory intensive games or play a video. If errors occur the stick needs to be replaced.

Follow this guide to test your hard drive.

Identify the make of your hard drive and then use one of the links below to get the manufacturers diagnostic for ISO CD. Burn the image file to a CD, boot the PC with the disc in the drive and run the diagnostics. You first need to set the CD drive to 1st in the boot order in the Bios setup.

If you do not have an image burner use this free software to make the CD.

ExcelStor: http://www.excelstor.com/eng/support.php?sub_id=3

Hitachi/IBM: http://www.hitachigst.com/support/downloads/

Samsung: http://www.samsung.com/global/business/hdd/support/downloads/support_in_es.html

Toshiba Fujitsu: http://sdd.toshiba.com/main.aspx?Path=SoftwareUtilities#diagnostic

Seagate, Maxtor & Quantum:http://www.seagate.com/www/en-us/support/downloads

Western Digital:http://support.wdc.com/product/download.asp?lang=enClick to expand...


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I've got a T410s 2904G2U That isn't POSTing and displays nothing on screen and the CAPS LOCK key isn't responding. I replaced the motherboard with FRU P75Y5925 and the RAM is Samsung 2GB 2Rx8 PC3-8500S-07-10-F2. I'm suspecting it is incompatible RAM that isn't allowing BIOS to be stored and that it is failing silently. What are your thoughts?

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I have an Emachines T6414 with a new videocard and sound card, neither of which require a seperate power connector than their slot on the mobo. THey were both in the machine for a few months when I decided to update my BIOS. I was updating my bios, and everything appeared to have worked. At the end it said: "success...press f1 to reboot" so I did. Then the problem started.

When I rebooted the PC the computer did not post, it only had all the fans (CPU, Main and Videocard) going full blast and the hard drive made a little noise, but nothing booted. I reseated the CPU, same thing. I called Emachines tech support and decided that the bios process actually didn't work. So, I bought a replacement bios from an online vendor, Biosman. I gave them the BIOS that the tech support had emailed me. I switched out the bios for the new one, and the same process happened still-no post, full fans and the hard drive warming up. At that point I bought a new PC and got the Geek Squad to transfer the data over.

So now I have come here for a last gasp attempt to revive the POS. I just read that the power supply could be the culprit. How should I determine what part has become faulty?

Thanks in advance. :dead:

A:PC doesn't POST, fans at full speed

Well when it boots up are you getting any signal on the screen?

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This is strange. After I post a reply in any topic, I don't see it, when I go back to that forum section, or when I open that topic?!
I do however see the entry if I click on my posts or Today's posts. I've tried IE8 and Firefox: the same effect.
Please help. Thanks.

A:Forum doesn't refresh to show my post?

Give me the addy of a post. I want to know if I can see it.

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My AMD 3200 64 doesn't POST.
When you turn on the power the lights come up the fans start working but it doesn't go to the beep and it just hangs. The monitor doesn't show anything at this moment. If you try just turning it off and on for like 20-30 times it boots up properly and works fine.

I tried to use the search but there are no complete threads with solutions.

Could you recommend me what to do?

A:Computer doesn't POST. Posts only after 20-30 attempts

Try a new power supply

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Just built a computer for my little brother and I live streamed it for Charity. Unfortunately, it's not posting. The LED's come on and the fans spin but no signal from the monitor and no signal from any devices such as the keyboard and mouse.

When I plug the computer in it turns on, but the power buttons in the front of the computer do not work. Which means I can't turn off the computer by it's power buttons, I have to unplug the power. There is a green LED that shows in the front of the computer as well. So, I know the motherboard is sending signal to the case.

Things I have tried so far: Double checked the Q connectors (Case connectors) and removed one stick of ram to ensure it's not a ram problem.

Computer Specifications: Asus m4a78T-E motherboard, Viotech Pro 505w PSU, Viotech Black ATX Mid Tower Case, 8 GB of Ram, HD Radeon 6850 1gb, Phenom ii x4 960t Quad Core 3.0Ghz processor.

A:New PC Doesn't post won't respond to Power button

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