For a while now, i've been getting BSOD's due to RtkHDAud.sys, driver_irql_not_less_or_equal. I've checked my registry, everything is fine, reinstalled, the drivers, using older drivers, the latest drivers and the drivers specific to my motherboard, all of them seem to cause a system lockup or a BSOD. There is a visual freeze and an audio stutter on the crashes (replaying the last half a second of sound over and over). I'm on Windows XP SP2 with a GA G31m-es2l motherboard w/ 9800GT, 450w PSU, 2.4 Pentium 4 processor, and 1GB RAM. Done memtest, tested gfx card. I know there are people that have had problems with the Realtek drivers causing a memory_corruption bug. Does anyone know a work around? I heard turning off hardware acceleration works, but if I do that then I lose the Nvidia control panel. Thanks for reading. Edited for more info.