|I believe it is best, especially after a virus/hacker tool infection [that is all virus's are now is hacker tools loads], you proceed to a repair install of xp.|
A repair install will refresh the Os files but leave your data /apps intact. Though my experience says some apps may need to be reinstalled. The repair does put you back to install defaults which means you will need to do all of your updates again.
here is a how to.
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