Question : STOP: 0x0000007E (0xC0000420, xxxxxx) acpi.sys - address 83AB9717

I am trying to install Windows Server 2008 x86 on the machine that I have Windows 7 Pro installed.

The weird thing is I tried installing other OS systems, it installs fine, but for some reason for Windows Server 2008 x86 it keeps throwing this error

Initially I had Windows x64 installed on this computer it installs fine but Windows Server 2008 x86 would throw that error.

STOP: 0x0000007E (0xC0000420, xxxxxx) acpi.sys - address 83AB9717

I also tried burning other CD's and tried Win Server 2008 with Hyper-V and without and Standard version all the same.

Answer : STOP: 0x0000007E (0xC0000420, xxxxxx) acpi.sys - address 83AB9717

Craig, I appreciate your input.

If you read my posts above I wrote that I already tried all the possible BIOS options, sorry I misspelled it second time, it is acpi.sys, and yes you are right it is Advanced Configuration and Power Interface.
BIOS flash was one the first things I did and verified that it is the current version.

See thing is any other OS CD's gets installed just fine but only Windows Server 2008 x86 version, and even Windows Server 2008 x64 version would install but x86, I know it is really weird. But I didnt have time to mess with it anymore.

My solution was to get another desktop from my buddy and setup my lab with Windows Server 2008 and ISA 2006 testing.

Thanks all.