Hi,
Adding to Palcouk’s suggestion, you may also try these:
If it is popping up on start-up, you may perform clean boot.
In Clean Boot, windows use a minimal set of services and startup programs so that software conflict is eliminated. To put the computer in clean boot state follow the steps in the article “How to perform Clean Boot”http://support.microsoft.com/kb/929135
Note: Please ensure that the computer is set to start as usual by following the step 7 from the articlehttp://support.microsoft.com/kb/929135
Diana
Microsoft Answers Support Engineer
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