winxp wont shut down

I just got a new computer and installed winXP on it, but when I try to shut down it just hangs after the "windows is shutting down" prompt, goes to a blank blue screen and nothign short of a reset will get it to respond. Pulling out the power cable trips the power for the building at night coz more stuff is on. Reboot from the OS works fine (most of the time). Mobo is intel d856PERL. help!

I'm running windows 2000 pro SP4 right now and I have had this problem since SP3 came out. I even did a clean install, worked fine, updated with sp3 and poof the problem was back. I can't figure it out. I hear my HD powerdown, then the system just freezes. Annoying as hell..

Hope you get it figured out!

Check your power management settings!

ok...and what am I supposed to look for? As I said, the hdd turns off fine..its the graphics card and mobo... seems I can't even standby or hibernate..you are telling me to go to controlpanel \ power options right?

Flashed the bios? Updated chipset and motherboard INF drivers?

If standby and hibernate are disabled, perhaps a driver conflict is causing problems with ACPI.

In Device Manager, what type of computer is it?
APIC Uniprocessor
MPS Multiprocessor
Standard PC

i have the latest drivers, and how do i flash the bios? its an ACPI.
thanks everyone for your input, this is the first forum where ive gotten a positive response p