Computer refuses to get beyond POST

[T0a5t3d]

Hello everybody,

I have a weird problem I'm hoping somebody will help me out on. My system's been running pretty smooth for the past 3 years with no major problems, but today I turned it on and it wont boot beyond post. I've tested my PSU (600W OCZ Stealthxstream) with another computer and it runs fine. I've swapped out the video card and I've tested the ram with another system - still the same problem. I'm suspecting it is a motherboard or cpu problem. Anyone know what the problem might be?

Specs:

CPU: Intel Core 2 Duo E6300 OC'd to 2.45Ghz
Mobo: EVGA nForce 680i SLI
Mem: Corsair 2GB DDR2 800 PC2-6400
Video: EVGA Geforce 8800GTS 640MB
HDD: Seagate 250GB 7200RPM
OS: Windows 7 Pro 32-bit

 

[skopalb]

Can you sit inside the BIOS menus for a while without it shutting down?

My thought is "What if the CPU is overheating and shutting your system down"

What kind of motherboard are you using? Does it have error codes/lights displayed on it?

 

[T0a5t3d]

It can't stay on for more than 30 seconds before it just shuts down. Also my mobo is in the description, Nvidia 680i SLI. I'm pretty sure the cpu isn't overheating since the fan spins and the heatsink is tight..

 

[skopalb]

Could have sworn I posted a while ago...

Go to page 62. Is that what your motherboard looks like? Most importantly, item #13.

http://www.evga.com/support/manuals/files/122-CK-NF63.pdf

If so, from page 163 onward has codes for what might be going wrong.

 

[Leeky]

Firstly, kill the OC, you can't discount an issue with the fact its overclocked, even if it has been fine for the last couple of years.

Try to POST with the CPU (and everything else) running at stock speeds, and see what happens.

Have you made any changes, or touched any of the hardware prior to the PC refusing to POST?

 

[T0a5t3d]

Thanks for your input guys, but it's still not working..

@skopalb Yep that's my board. It cycles through a whole bunch of codes and then settles on 'FF' which is the code for booting. Is it supposed to cycle through the codes like that?

@Leeky I'm trying to access the bios to reset everything, but it doesn't even stay on long enough for that :/ and I didn't change any hardware whatsoever recently.