Hi,
· When do you get the error message (while using some application or randomly)?
You may check in clean boot state if the issue persists. If the issue doe not persist in clean boot then to identify which if the application is causing the issue follow the steps to divide and conquer suggested in the link given below.
How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7
http://support.microsoft.com/kb/929135
Note: After you have finished troubleshooting, follow step 7 in the article to boot to normal startup.
Hope this information is helpful.
Amrita M
Microsoft Answers Support Engineer
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