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The most terrifying thing about Driver Verifier is that it works too well. If you enable it on a buggy driver, your system will likely crash within seconds of booting.
To run it on Windows 8.1, you simply press Win + R , type verifier , and hit enter. windows 8.1 driver verifier
The "Driver Verifier Manager" wizard will open. The most terrifying thing about Driver Verifier is
This is where the comes in. It is a powerful, built-in utility in Windows 8.1 designed to stress-test your drivers and unmask the ones causing system instability. you simply press Win + R