How To Uninstall SQL Server 2012 ? Exception from HRESULT: 0x8007000B

I am trying to uninstall SQL Server 2012, but as soon as i choose the instance to uninstall it shows the following error

TITLE: SQL Server Setup failure.

SQL Server Setup has encountered the following error:

An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B).

Any help will be highly appreciated, since all my work has got stucked due this problem.Thank you.