Ok,

So I just bought a new computer.

Specs:

Asus Striker II Extreme
2x Corsair Twin3x 1333mhx DDr 4GB
2x Asus GeForce 9800GX2 1 GB "TOP" GDDR3
MIST 1000w PSU, Detachable cables.
--- Windows Vista 64bit.

4x Sata disks
1x DVD writer. Connnected to the IDE slot.

Been a while since I did buy a new system, last time about 3 years ago.

Im having major stabilty problems on this new one.
I just cant figure out what it is.

With both cards running in SLI the computer crashes after 10-15 mins inside Bioshock.
With just 1 of em running, the system last for 1 hour.

Somethimes it ever crash when im just surfing the inet in windows.

I have tried:
- flashing the bios to the newest version.
- changing the voltage on the RAM.

Also when I boot up, the LCD poster tells me: DET IDE (detecting IDE) and then displays "ERRORMSG" for a brief second and continues to boot windows.
I tried to pause the bootup at that exact second, but I dont see any errormsg on the screen.

The PSU have 3x 12V1 3x 12V2 and 6x 12V4.
What outtakes shall I use for the GPU?
- The GPU has 2 power intakes. 1x8pins and 1x6pins. Both of the need power.

Im really struggeling with this,

All help would be useful at this point, im totaly frustrated.

Thanks for the replies.

Do you have any information on the MIST PSU? I have never heard of this brand. You have a very demanding system and you need very high quality power to be stable with those GX2s.