I am getting a blue screen with stop: 0X0000007E (0xC0000005, 0x8A4E35F2, 0x8A603540, 0x8A60323c)
acpi.sys - address 8A4E35F2 base at 8A4DE000, Datestamp 4549adb7
This is a Vista Ultimate machine
4 gigs RAM
Will not boot with system disk. Finally got in safe mode and tried system restore but it crashed immediately.