I am using a Windows XP SP3. It is about two months that I am faced with this problem. Whenever I turn off my computer it restarts again and this happens repetitively. I think the problem started when once I unintentionally or mistkenly clicked the
"Switch To" or "New Task" of Window Task Manager when a program did not responding properly to "End Task" prompt. Searching the web, still I've not found a solving-the-problem answer. Thanks for help.