PC powers on but no post

[Ozboblogolgoro]

My PC had been acting strange for weeks. I never could figure out why. Freezing, weird graphical issues such as missing bars on top of windows and halfway loaded pictures.

Now, it will power up, fans and such running, but I get no post beep and Windows will not load. One time however I let it sit there like that powered on and several minutes later I heard post beep and Windows started up. I can't get it to do that again though. D:

Any help is much appreciated. Thanks for your time. :awe:

I tried putting in my Windows 7 disc but it didn't do anything.

 

[alkemyst]

Are you a victim of bad capacitors? Look at them on the motherboard and see if any are swollen or have a brown crust on top.

 

[Ozboblogolgoro]

Are you a victim of bad capacitors? Look at them on the motherboard and see if any are swollen or have a brown crust on top.

They look fine. ty for reply

I took everything apart. Unplugged input devices and pulled the memory. Still no post.

 

[Saxoholic]

Maybe the power supply is failing and isn't pumping out as much juice as it used to? If you have another PSU on hand you could try that.

I'm going through similar problems, except mine won't post and just shuts down after about 4 seconds.

 

[Ozboblogolgoro]

I took it to a guy who works on PCs and he said it might be the motherboard. But I can't find a motherboard that matched it. can anyone help me out?

GIGABYTE GA-M57SLI-S4 mobo
AMD Athlon 64 X2 5000+
4gb ram ddr2 800
geforce 8800
OCZ GameXStream OCZ700GXSSLI 700W ATX12V SLI Certified CrossFire Ready Active PFC Power Supply

 

[Maverick6969]

I think that Saxoholic's suggestion of trying another PSU is good. That would be my 1st step in troubleshooting.

Step 2 (if the above does not produce any results).
In situations like this, I like to work from the ground up. Disconnect everything from the system. Only thing you should have connect is the hard drive, RAM and keyboard. NOTHING ELSE. See if it will post. If it does, then reconnect hardware components one at a time to isolate the issue.

Step 3 (if the above does not produce any results).
Try resetting the BIOS. Since you cannot post and see anything on the screen, take out the CMOS battery (It will look like a large watch battery) from the motherboard and wait 60 seconds. Reinsert. Try booting.

Step 4 (if the above does not produce any results).
Anther possibility is that the memory you are using is incompatible with your system. If you have some DDR2 memory laying around, try swapping them out.

If you are sure they are compatible and it says so on Gigabyte's website, then run memtest86 to rule out defective memory.

 

[daniel49]

I took it to a guy who works on PCs and he said it might be the motherboard. But I can't find a motherboard that matched it. can anyone help me out?

GIGABYTE GA-M57SLI-S4 mobo
AMD Athlon 64 X2 5000+
4gb ram ddr2 800
geforce 8800
OCZ GameXStream OCZ700GXSSLI 700W ATX12V SLI Certified CrossFire Ready Active PFC Power Supply

maybe you can find same board cheap on ebay?

http://computers.shop.ebay.com/i.ht...&_osacat=1244&bkBtn=&_trksid=p3286.m270.l1313

 

[Check]

I would start with pulling out components in this order (don't replace after you take them out, just keep moving to the next device)

1) IDE/Sata devices
2) Video Card
3) Ram
4) processor

Assuming that your system speaker is hooked up:
when you pull the video card, ram, or processor you should get the appropriate beep code. So if the computer isn't working with the video card in and it beeps when you take it out then try replacing the video card.

If you don't get any beep codes when you have pulled everything my guess would be mother board.

 

[marksol5]

Yes, what check said.
Yank out every thing except the CPU, if it doesnt beep a fault code, its the one of the 3 things, CPU, Mother board or Power supply. Trying a new supply wont hurt, but the others are kind of terminal. Good luck.

 

[Maverick6969]

The OP has not updated this thread in over 4 days - I think it's solved.

 

[Ozboblogolgoro]

working on the steps. I just got it back

 

[Evadman]

I would start with pulling out components in this order (don't replace after you take them out, just keep moving to the next device)

1) IDE/Sata devices
2) Video Card
3) Ram
4) processor

Assuming that your system speaker is hooked up:
when you pull the video card, ram, or processor you should get the appropriate beep code. So if the computer isn't working with the video card in and it beeps when you take it out then try replacing the video card.

If you don't get any beep codes when you have pulled everything my guess would be mother board.

This.

 

[zagood]

Check-list indeed.

I'm putting my money on video card.

 

[ICXRa]

I recently ran into this exact problem on one of the machines at work. It would power up but no post, no video.

It was RAM

 

[zero koopa]

I would start with pulling out components in this order (don't replace after you take them out, just keep moving to the next device)

1) IDE/Sata devices
2) Video Card
3) Ram
4) processor

Assuming that your system speaker is hooked up:
when you pull the video card, ram, or processor you should get the appropriate beep code. So if the computer isn't working with the video card in and it beeps when you take it out then try replacing the video card.

If you don't get any beep codes when you have pulled everything my guess would be mother board.

Ive experienced the same problem and started a thread here http://forums.anandtech.com/showthread.php?t=2117990

I pulled out my dvd drive, 2 hard drives and had no beeps. Then when I pulled out my video card power it had one long constant beep. (In my manual it says the long constant beep is due to the video card not being plugged in properly) According to what you wrote, I should attempt to replace my video card?