I recently installed Windows 2000 on my laptop(using Standard PC hal, since ACPI fails and MPS multiprocessor causes an INACCESSIBLE_BOOT_DEVICE) and when I installed my graphics drivers(I have BWC's extended kernel) upon restarting I got a blue screen(UNEXPECTED_KERNEL_MODE_TRAP). It happens at the end of the boot process, when Windows 2000 tries to switch video mode to go the login screen. I could post some boot logs if needed. Also, after installing the Realtek HDA drivers I don't have Wave Mapper sound, but WDM-KS and Directsound still work, not sure why.