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Here are 3 PC tricks you should know. If you think you've got a virus, hit Windows plus R, type mrt and press enter. This built-in tool scans your entire PC. No paid antivirus needed. There you go. If your screen freezes or keeps going black, press control plus shift plus Windows plus B. It instantly resets your graphics driver and usually fixes it. And if you close your browser by accident and lose all your tabs, press control plus shift plus T. Everything reopens instantly. Easy.
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