I was using system mechanic which is not working properly it gives an "unknown error". I have tried to uninstall and re-install , tried to remove it completely from registry , tried to re-install it in another user account same issue, i am using windows 7, but i have a friend who used windows xp and getting the same error. How to identify why exactly it shows this error. Any ideas to fix it?
For starter you can look at Event Viewer -> Windows Logs -> Application. It should give you more details about error itself.