"Thumper" <thumperstrauss@gmail.com> wrote in message
news:1185817636.662070.116140@e9g2000prf.googlegro ups.com...
> My AMD-based XP machine boots automatically (when I plug in the power)
> and does not shut down (power off) when I shut down from Windows or
> hold the power button.

Mainboard or PSU could be hardware issues. Could also be something asserting
the "Wake" signal like a network card or modem, so disable any options in
the BIOS settings that could wake the PC.