Originally posted by ShoobieRat
I originally had this problem on an XP machine with a asus motherboard. When that got fried, I bought a gigabyte board. Without doing anything to the bios or setup, I now have my machine turning itself off when I hit shutdown. That leads me to suspect that it is a mobo-bios specific issue, as it is the hardware that actually has to do the turning off. I know some mobos don't support active switching.
ShoobieRat... (sounds even funnier as I type out your name - funky name man....LOL ) you're 1/2 right. If you read that link to the MSKB article, it says in plain english, this is related into an BIOS issue where it may not be ACPI compliant.
And saying that BIOS is a "utility" is incorrect and misleading. The BIOS (Basic Input Output Services)... functions as the bootrap loader for the PC itself retaining the basic hardware configuration information. When it's done performing its task, it then passes the control over to the OS so it can in turn process it's own loading files. Most commonly today it's an EEPROM chip on your MB which you can update ONLY when absolutely necessary.
Furthermore, the BIOS menu is not a utility either, merely a user interface so that you can manually change those settings which are stored in your BIOS chip.