When you try to install updates or components in Windows 7 or in Windows Vista by using the Windows Update Web site, you may receive an error message. Or, if you try to turn Windows features on or off, no features may appear in the Windows Features dialog box. This article contains two step-by-step methods that you can use to try to restore corrupted or incorrect system files and settings.

This article is intended for a beginning to intermediate computer user.
You may find it easier to follow the steps if you print this article first.

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