I've seen like a million other threads for this particular problem with just about every kind of possible solution there could be. However, as no two computers can be identical, I'd give it a shot and get some help on this one.
After attempting to resume Windows 7 from Sleep, none of my displays awoke so I shut the system down, checked all cables and leads for the monitors. As it were, no issues.
I booted my PC to be presented with a whole lot of ... Nothing. All drives and fans were functioning, my DVDROM did it's little check for CDs, all the normal crap, only it neither woke up, or brought me to GRUB.
Thus far, I've reset CMOS, done bare bones booting, tried my GPU, HDDs and PSU in my several other self built machines. No problems, no drama.
I'm yet to test my CPU and RAM in another machine, as I don't actually have another capable of it at present. I'm also quite unsure on whether my speakers works or no, I've tried several with no beep codes.
As of right now, it's still set up for bare bones booting. I should also mention that the power button needs to be held to kill the system on an attempted boot.
Any ideas, or help would be appreciated, specs will be posted below.
Cheers for the assistance.
OS: Windows 7 Ultimate 32bit & Fedora 11
PSU: Ritmo Force680
CPU: Intel Dual-Core 2.7Ghz E5400
MOBO: Asus P5G41T-M LX
RAM: 2x Kingston 2GB DDR3 - KVR1066D3N7/2G
HDDs: Seagate Barracuda 40GB - ST340014AS
Western Digital 500GB - WD5000AAKB
GPU: ECS GT220
(alternative: MSI N9500GT)
EDIT1: Any suggestion would help, including "try hitting it with a sledgehammer" as a valid idea.
Could it be possible the BIOS is damaged or corrupted from a failed wake up?
EDIT2: Strange. Just tried to boot it to find that there is an odd problem. First attempted boot it took around 5 seconds for the PC to start. Once it did, it powered off and back on again. Second attempt, it took around 15 seconds to boot, this time with no powering off and on.
It would appear the PSU might be the culprit. (I also noticed the PSU fan took a little to get going after power up.) Going to retest the PSU in an another machine and will edit with results.
SUB-EDIT2: PSU continues to function normally in other systems. So what could be the possible culprit? It would appear to be either a mobo or a CPU problem. Unsure on if there could be much else. Require input on this.