Hi,
You may try these:
Step 1: Run a virus scan.
You can do an online virus scan by clicking on the link http://onecare.live.com/site/en-us/default.htm and Clicking on the Full Service scan and accept the Agreement.
Step 2: This can also happen if there are any software conflict. 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 article.
Diana
Microsoft Answers Support Engineer
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