1. Is the issue specific to FS X uninstallation? 2. Have you made any changes to the computer prior to the issue?
Method 1: Run the following fix-it: Note: The bfdhjyew following fix-it wants you to point the program to uninstall, point to FS X. Fix problems with programs that can't be installed or uninstalled: http://support.microsoft.com/mats/Program_Install_and_Uninstall
Method 2: Refer the following article: How to troubleshoot problems when you install or uninstall programs on a Windows-based computer http://support.microsoft.com/kb/2438651
Note: After you have finished diagnosing using clean boot, follow step 7 in the article to boot to normal startup.