In addition to running Disk Cleanup and Disk Defragmenter to optimize the performance of your computer, you can check the integrity of the files stored on your hard disk by running the Error Checking utility.
it can develop bad sectors. Bad sectors slow down hard disk performance and sometimes make data writing (such as file saving) difficult or even impossible. The Error Checking utility scans the hard drive for bad sectors and scans for file system errors.Should run this utility once a week to help prevent data loss.
How to run the error checking utility?
1. Click Start, and then click Computer.
2. Right-click the hard disk you want to search for bad sectors, and then click Properties.
3. In the Properties dialog box, click the Tools tab.
Click the Check Now button.
4. In the Check Disk dialog box (called Error-checking in Windows 7)
5. Click the Check Now button
6. Select the Scan for and attempt recovery of bad sectors check box, and then click start.
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