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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?

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Is it a paid registered version? – Karan Apr 30 '13 at 22:24
don't use such tools which only cause more errors compared to what they fix/improve. – magicandre1981 May 1 '13 at 7:29
it is a paid version. – Rohit May 14 '13 at 13:58

For starter you can look at Event Viewer -> Windows Logs -> Application. It should give you more details about error itself.

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I uninstalled Internet Explorer 11 and System Mechanic works fine now.

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IE 11 wasn't released for Windows 7 when the OP asked his question (and was never released for Windows XP) , so I don't think this answer applies to the question. – DavidPostill Mar 27 at 10:00
Also had this problem with IE 10 but not with IE 9 – Jac Mar 29 at 0:44

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