I had major problem trying to fix an installation of Windows XP. Having used Mac versions of Norton Utilities in the past with great success, I got SystemWorks.Total waste of money. I wound up reformatting the drive anyway (and #$@! Windows wouldn't even install on it again, but that's another story).The only thing I could have used was Antivirus but I ditched that in short order (for some freeware) since Norton was so annoying and consumed too much CPU and resources than it was worth -- and this was with a stripped down install.