Ok. So I was on my computer before, on Ventrillo and Safari when I went to play CoD4 Multiplayer. When I loaded it up I got a BSOD!
I restarted and carried on using my PC as usual, playing CoD and using Safari and Ventrillo.
I opened up 'Defragler' and left it while I went and sat with family for an hour or so... I came back to see another BSOD!
I had my RAM running at 1.8v (2.2v should be stock). I went into the BIOS and set my DDR2 voltage to +0.4, which would make it 2.2v. Thinking that may be the problem, I tried to boot up, but I was presented with another BSOD! So I set everything back to stock, tried, and got another BSOD. It won't even start to boot into Windows. It just restarts.
The settings I had have / are stable. I've been using them for months!
At the moment I've un plugged it and will try in the morning. Maybe run Memtest?
Any ideas? This is a real kick in the balls!
UPDATE:
Have Ran Memtest for 4 hours, (3 passes), With no errors.
It happens with everything OC'ed and at Stock.
Will BSOD when at 47% of defrag, with Defragler.
When coming out of Standby, it'll freeze, but not all the time.
Random BSOD's.
Sometimes, Will turn on, Fans Spin, But will not POST or BOOT.
If left un-plugged for 20 minutes, Will come back on.
Have ran Driver Cleaner, to no avail.
Have ran Check Disk, Nothing.
Ran CCleaner, MANY times, no help.
Sometimes, Programs stop responding.