I have just upgraded from Win 98 to XP on an Advent machine with 450 PII and 128 RAM. Prior to upgrade my machine would power off automatically as part of the shut down procedure. Following upgrade however,it now has to be switched off manually at end of shut down procedure. I suspect that something in the BIOS has changed, and have had a look but cannot find anything that refers to shut down. How can I restore my automatic switch off?