I have a Lenovo desktop Vista Business PC which recently had been sent out to a shop for a virus cleanup. It was wiped, new OS installed (upgraded to Vista Business from XP) and some user data was transferred from the previous install.
The users of the PC shut it down when it is not in use. After coming back from the shop, the users called me about an issue with the computer turning on by itself from a complete shutdown. I assumed it was asleep instead and woke up to run some task or other. However at this point I can confirm that the computer is being shut completely down, the power button on the case is completely dark, and within about 20 to 30 minutes it will power on by itself. I've not seen this before, and don't know what the possible causes might be. Anyone else have any ideas, or seen this before?