Hi, First backup all your data via: http://www.microsoft.com/technet/prodtechn...y/mgrtfset.mspx Then backup your entire OS to another hard disk. Buy one if you must. Then format your current hard disk. The reinstall Windows. Hook up the new hard disk, where all your data is stored, and run the transfer files and settings wizard and get "all "your files and settings back... See if problem goes away... If not just reformat again and then grab the data off the old disk one by one.. Take Care, Will