Gaming trouble after format in OS: Microsoft Posted May 7, 2008 Here's a shot in the dark... 1. Memtest86+ I have that, I'll try it next time I reboot. 2. Dual Prime95 / the favorite CPU/memory beating of your choice Running that now. 3. IRQ conflicts? How would I determine that? 4. Anything showing up in event viewer? Not that I can find. 5. Have you had to install the dual core fix? Before? Now? Good call, that could be it. I had it installed but I never reinstalled it. Where can I get it again? 6. OC'ed? Does it do the same at stock? It's stock, and has been for a while.