This worked for me too. Weird but true. DG > I had exactly the same problem with the power supply on mine (well, > the one on permanent loan to my father in law!). It refused to > power back up once it had been disconnected from the mains and > cooled down. Blow hot air from a hair dryer through the vents in > one of the corners and it'll wake up again.......no, > seriously!......I know it isn't a permanent fix but, as long as the > power supply is connected to the mains, even if the computer is > shut down, it stays up without a problem.....Might get you out of a > fix anywhooo... I read about it here: > > http://www.cubeowner.com/forums/index.php?showtopic=13846 > > Lacy