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Step-By-Step: Get a Free Tune-Up for Your Windows PC

Stan Miastkowski

1. Scan for Viruses

A virus can play havoc with your computer and cause it to behave in truly strange ways. Make sure your PC's antivirus software is up-to-date. Then perform a full-system scan. If your PC does not have an antivirus utility installed, try Trend Micro's HouseCall, a free utility that scans your computer over the Internet.

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