How to repair a cyclic redundancy check on a hard disk

Written by chris hoffman Google
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How to repair a cyclic redundancy check on a hard disk
Repair CRC errors and corrupt file systems with the Check Disk tool. (hard disk in funzione image by Michele Campini from

A cyclic redundancy check error on a hard disk means that part of a file read from the hard disk doesn't match the expected value. A cyclic redundancy check error, in other words, means that files on your hard drive are corrupted. Repair a cyclic redundancy check error on a hard disk using the Check Disk tool in Windows.

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  1. 1

    Click "Start" and click "Computer."

  2. 2

    Right-click the hard disk with the cyclic redundancy check error under "Hard Disk Drives" and click "Properties."

  3. 3

    Click the "Tools" tab at the top of the hard disk "Properties" window.

  4. 4

    Click "Check Now" under "Error Checking."

  5. 5

    Select "Automatically Fix File System Errors" and "Scan for and Attempt Recovery of Bad Sectors" in the "Check Disk" window by clicking each option if it isn't already selected.

  6. 6

    Start a disk check and repair by clicking "Start" in the "Check Disk" window.

  7. 7

    Click "Yes" if the "Do you want to schedule the disk check to occur the next time you restart the computer?" prompt appears. A disk can't be checked if it's in use, so you'll need to restart Windows to check it.

  8. 8

    Restart your computer by clicking "Start," clicking the arrow icon to the right of "Shut Down" and clicking "Restart."

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