First time poster, longtime PC enthusiast.
First off PC specs: 8800 GT x 2 BFG in SLI, Asus A7N8X-D, 6GB RAM (2x 1GB Crucial, 2x 2GB G.Skill), Intel e6750, 500gb HDD, 520 Watt Corsair PS, Windows 7 64 Ultimate.
Problem: Hard crashes, most often during 3D applications, but not always. Requires manual restart.
What I've tried so far:
1. At first I thought the problem was software so I did the standard fresh install of windows. No luck, crashes almost immediately in almost any 3D application.
2. Tried rolling back video drivers. Issue persists.
3. Next I thought SLI was the problem. First I tried to disable it, then took out one of the cards and tried, then tried the other card. No luck, issue persists.
4. Maybe heat was the problem. Did a full, deep cleaning. Replaced thermal paste. Issue persists.
What's the next most likely culprit? Any advice? Maybe something with Directx? I don't know....
Thanks in advance.