11-06-2012 01:49 PM - edited 11-06-2012 01:49 PM
Welcome to the BlackBerry Support Community.
Sorry to hear you are experiencing an issue with the BlackBerry® Desktop Software not starting.
Please complete the following clean uninstall process:
How to perform a clean uninstall of the BlackBerry Desktop Software - http://www.blackberry.com/btsc/KB02206
Download a new copy from the following location:
Reinstall the BlackBerry® Desktop Software as an Administrator (as referenced in the article above.)
Let us know if this helps.
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