Yahoo msnger not working

[rajat22]

Yahoo msnger not working. Double clicking on the icon does nothing. Uninstallation and reinstalling did not help at all.
Similar problem with Virtual CD 7....not working, Adobe audition....same problem. May be some system file missing.
Please help to solve.

[kato]

I wont say to tale extreme step and reinstall system but try to reapir if it doesnt help reinstall it no other option i guess