Investigating other possible causes of a problem

You must be logged on as an administrator or a member of the Administrators group in order to complete this procedure. If your computer is connected to a network, network policy settings may also prevent you from completing this procedure.

If a problem still exists after you perform a diagnostic startup, investigate the possible causes listed below. For more information, click Related Topics.

A file is missing, corrupted, or has been replaced. Refer to the System File Checker tool to investigate this option.

Your registry may be corrupted. Refer to the Registry Scan and Backup Utility to investigate this option.

Your computer may be infected with a virus. Search the Web, using virus as a keyword, for information about virus-scanning software.

An upgrade from a previous version of Windows was unsuccessful.

Using Backup

Detecting and repairing disk errors

Using Internet Explorer

Search the Internet

Using Device Manager

Understanding System Restore

Startup options

System File Checker (sfc)

Restore the registry

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