Hi, my computer is suffering from various instability problems: I get random bluescreens, IQRL_NOT_LESS_OR_EQUAL, DRIVER_IRQ_NOT_LESS_THAN_OR_EQUAL, BAD_POOL_HEADER and probably others too. Programs crash at random, graphics intensive games especially. The nvdisp driver stops working (3d games sometimes loose their color/graphics before this). Zip archives won't unzip, "archive corrupt". After a few tries it unzips despite. This seem to happen with different archives/zippers (zip, rar, 7z) including cab archives during program installation. Wont always boot normally, sometimes the screen just goes black and I have to reset to boot. My specs are: Motherboard - Asrock 4coredual VSTA CPU - Intel Core 2 Duo E6600 2.4GHz RAM - 2x 1GB DDR2 667MHz Graphics - GeForce 8800 TGS PSU - Xilence 480W Redwing It's a clean formatted XP SP2 with all updates. I have the 163.71 forceware as well as the Asrock drivers and latest bios from asrock motherboard homepage. I've also tried using vista, without difference. I tried using an older graphics card; GeForce FX 5600 with the same results. Also the same with different HDD's, both SATA and IDE.