[Graphics Card?] Left 4 dead crash

Hello. Been browsing these forums every one in a while for a few months now, you guys have some good threads.

I have an issue I want some feedback on.

my system is:

i7 920 @ 3.67ghz, 1.2v
corsair dominator 1600 6gb
nvidia gtx 285 1gb
xfx gtx 285 1gb (recertified)
corsair 1000w psu
x-fi titanium


When i play Left 4 Dead, and basically only L4D, i occasionally (maybe once every few hours, or once every few days) have a strange crash. The game goes into a constant sound loop and the video freezes. I have to ctrl/alt/del and end l4d. when i enter the game again, it works, but SLI becomes disabled. I must disable and re-enable SLI to have SLI work again. I initially thought it was a heating issue, so i used EVGA precision tune to raise fan speed to 100%. The cards usually run around 88c max. This seems to be within operating temp.

I do not know if this is a setting issue in l4d, or a bios tweak i am missing, or just the recertified 285 acting up. Any ideas?

Any other information needed?

You can easily play L4D with one of those cards so take the recertified 285 out and see if your problem goes away.

Could be a driver issue.... what video driver's are you using?

If the 190.62 doesn't work then try rolling back to the 180.XX and see if that resolves the issue....