Vista - CRCDISK.sys?

Hi

Iv had a few problems, first of all was after using a USB to boot dos, i unplugged my HDD and CDrom so nothing would happen, i loaded up and everyting was fine, when i wanted to go back to my OS i turned my pc off, plugged everyting back in and went about the usural buisness, changing boot options etc, and when it tried to load windows, i got a BSOD with "The Bios in this system is not fully ACPI compliant, please contact your system vendor for an update" *** STOP 0x000000A5 (0x00000011, 0x00000006, 0x00000000, 0x00000000)

r...ite so went back tried loading from last known working confuguation, and i got a black screen as it hits CRCdisk.sys drivers, wtf? It crashes on this point every time. so yeh tried pulling every non essentual hardwar, no luck, swapped ram discs, nothing, can't boot from disc as after it finsihes loading the vista disc it blue screens. iv reset my bios countless times, and checked my bios settings, disabled and enabled everything i could think of, and im stuck, Tried loading a new BIOS off a USB stick, but nothing. any advice would be awsome, i have a feeling its got something to do with CRCdisc.sys but not sure.

system specs

Intel Core 2 Quad core Q6600 2.4
Abit In9-32N MAX
XFX8800GT
3GB DDR2 ram
160GB MAxtor HDD
SAmsung SH-S203n/BEB20x DVDR

Thanks
Tom