I updated my PC's Windows XP at using automatic updates. It installed about 20 XP updates as well as other stuff... I do not have Service pack 1. Now after the starup, it seems to go into sleep mode. Monitor is blank and the keyboard and mouse are unresponsive. The drawers on the DVD and Rom drives open and close but the PC has no response, but its on. I guess I'd like to revert to the last good start but after the startup completes the PC is asleep, or just gone.