Windows 8.1 Driver Verifier ((full)) Here

For the average home user, it is a diagnostic tool of last resort. For the IT pro, it is the difference between a random crash once a week and a stable machine.

For the average user, a driver crash results in a frantic reboot. For the engineer, Driver Verifier is the interrogation room where faulty code finally confesses. At its core, Driver Verifier is a stress-testing tool. It doesn't just let drivers run; it subjects them to extreme scrutiny. By placing a layer of "supervision" around kernel-mode drivers, it looks for common illegal acts: corrupting memory pools, attempting to raise IRQL (Interrupt Request Level) inappropriately, or leaking handles. windows 8.1 driver verifier

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