Posted 05 February 2011 - 10:35 AM
Open msconfig and choose selective startup (disable everything from loading) and reboot. Does the problem still occur? If not, start adding items back to msconfig one or two at a time, rebooting after each change, until the problem reappears and you'll have identified the offending process. However, if the problem continues even with the first selective startup it's possible we're looking at a hardware related issue.