Doom3 crashed to desktop, help please

[sharp]

Problem: Doom3 crashes to windows when I play about 1 till 10 mins. It usally happens when I'm in a firefight. It just exiting itself and returning to windows. Also the benchmark program 3DMark2003 sometimes crashes to the desktop. I have no idea where that come from. Btw my Benchmark score is around 12500 with 3DMark2003!

specs:
Antec TruePower 380Watt. <-- alot of ppl saying that is good enought for my system.
AMD Athlon64 3800+
1GB mem (cas 2-3-2-6 <-- default settings, Corsair TWINX1024-3200LLPT)
^^ I've tested the mem for about 1.5 hour and getting zero errors!

MSI K8N neo2 Platinum-54 motherboard
Audigy 2 ZS
Sapphire X800XT PE

Things I've already tried:

installed the newest mobo drivers and ATi drivers (even the 4.9beta)
Playing D3 with SP1 and SP2, with DX9.0b/DX9.0c, completely reinstalled windows XP and slipstreaming SP2, disabeling 'fast writes' in BIOS, underclocking the mem/gpu of the gfx card. Increasing the AGP volts, increasing the Vcore volts, increasing the mem volts, underclocking system memory (to cas 2.5/3), using defragmenter. Using Doom3 on lower gfx settings (medium quality, no aa etc.) Nothing seems to work.

Any thougths?

 

[Shuzer]

Holy. Crap.

You did ALOT to try to get it to stop crashing.. that's insane, man.
I can't offer any advice past what you tried, that must be awful. :|

 

[Roland Deschain]

Have you tried to reinstall the game or change the settings? I'm going at the obvious here, since you've covered the rest of teh bases.

 

[Shuzer]

Reinstalling the game would have had to have fallen under the reinstalling Windows part of his attempted fix

 

[Roland Deschain]

Hmm, run a program to check how hot your graphics card is. Maybe it's overheading and causes the crash. ATItools is decent enough. I'm shooting in the dark here, you did things I never even thought of doing.

[EDIt]: Should really read the post before, my earlier advice, two posts up, is total bullshit. Sorry

 

[sharp]

I connected a 2nd powersupply to the X800XT and I got no problems with D3 anymore. So my default powersupply is the real problem, even with 380watt is isn't enought.

Now I just need to replace the Antec Truepower 380watt with a 480 watt or something!

 

[Prince of China]

Slap the CD in the face and say," Stop crashing!"
But I may suggest maybe reinstalling Widows?
I don't know...my guess.

 

[Shuzer]

Slap the CD in the face and say," Stop crashing!"
But I may suggest maybe reinstalling Widows?
I don't know...my guess.

Wow, first off, he resolved his problem. Second, if you had read his post, he had already done that.

 

[Raxxman]

Wow, 380's not enough? I thought the x800 was less thirsty than the 6800? you need your own power station to run that? think about the alienware idea with 4 or 8 6800's? you reckon the lights will dim?