I have an Abit QuadGT IX38 mobo, latest BIOS, but they are out of the mobo business and I don't expect any new BIOS revisions. Can't even find their US support site any longer. Anyway, the trouble is, I can put the pc to sleep apparently fine the first time, but after waking it up, it will not go back to sleep or shut down without a hard shut off. In sleep mode it shuts the monitor off but the fans stay on, if I am trying to shut down, it just stays on the shut down screen forever. There appears to be no log in the event viewer other than power was unexpectedly shut off (me shutting it down). I have run XP on this machine since I built it, and never had any sleep related problems. If I don't put the pc to sleep, there are no issues, shuts down, restarts fine. Please help if you can.