If you’re reading this story, odds are pretty good that you’re tech support for your friends and family. And you might even have a few well-worn habits when it comes to trying to figure out what’s ailing a Windows machine. But you might want to re-examine them, on the advice of Mike Danseglio, a guy who knows what he’s talking about. He joined Will Smith in the latest PCWorld YouTube video.

Mike was doing technical support at Microsoft itself way back in the 90s and he’s got more certifications than most people have had hot meals. (Not really. But not, not really.) And he wants you to stop using some of the go-to fixes like System File Checker (SFC), Deployment Image Servicing and Management (DISM).

“There is no one set of steps to fixing a computer,” says Mike. He argues that you shou

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