Hi all! Built this new system mostly of new parts: Asus P5B Core2Duo E6400 Club3D NV 7900GS Logitech Cordless Internet Pro keyboard/mouse Buffalo 800MHz 1GB DDR2 Antec Sonata 2 case & power 450W 80GB Samsung IDE HDD (from old system) Gigabyte DVD-RW (from old system) XP Pro 32bit Ever since new the system has suffered from BSOD IRQL_NOT_LESS_OR_EQUAL stop errors. I have googled around and done many tricks to solve this but nothing helps. Memory was tested with memtest: clean, disck checked: clean, upgraded BIOS and logitech mouseware. Uninstalled zonealarm and avast antivirus, pagefile trick tried, windows reinstalled. BSOD has so far always occurred when playing 3D game like Oblivion. Temperatures should be fine. No viruses should be around. I'm attaching two minidumps if anyone could help it would save my day. Thanks!