After making no changes that I can recall, one day when I booted my windows 7 professional pc, and all of my .lnk files do not work. The .lnk files on the start menu and desktop do not respond in any way when clicked. Items pinned to the task bar respond as "can't open this item. It might have been moved, renamed, or deleted. Do you want to remove this item?" All .exe files work correctly. If I go to the program files folder, I can open a program. If I link it or pin it to the taskbar the above happens. I have tried registry fixes listed in other forums and none seem to help. When manually viewing the registry, it appears to be identical to the fixes the registry fix tools apply. Therefore, they are essentially making no changes. Please help.