What's likely a problem is that you have no less than 4 posts about this issue.
Making new posts may not elicit an answer, but more information which you add
to the post you wish to expand on may help others see what the issue is.
On your part, gory details about the machine, what software you loaded and whether
it's clear of all pests noted by HouseCall, Spybot, Adaware and Cwshredder would help
in removing PARASITES as a cause.
I have recently upgraded my OS from Win ME to Win XP pro. Occasionally, my cpu beeps and the windows xp theme changes from the blue start menu to the gray, square one. I cna change it back, but the same thing will happen around 3 hours later. Please help. I need to know what is causing this