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.
Detecting and repairing disk errors
Using Internet Explorer
Search the Internet
Using Device Manager
Understanding System Restore
System File Checker (sfc)
Restore the registry