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Windows – common problems and fixes

When should I use sfc /scannow?

Topic #115 · Updated · Pataisoma.lt

Troubleshooting guide

How to fix the problem

In a running Windows, launch Terminal or Command Prompt as administrator. First run DISM /Online /Cleanup-Image /RestoreHealth and wait for completion; after successful completion - sfc /scannow. DISM may require the Internet or a suitable recovery source. These commands repair Windows components and system files, but not a failed SSD, RAM, or programs. Do not turn off the computer during the test.

If the problem persists

If DISM or SFC returns an error, make a note of the exact message and make sure the terminal is running with administrator rights. Do not run the /Online command in a recovery environment in hopes of repairing a non-booting Windows installation.

Request a repair

Manufacturer information and instructions

Microsoft - instructions for this topic ↗

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