- Look into your system32 directory (under windows folder) for EvoInst.exe or anything with
EvoInst, including any other extensions.
- Before you delete check the file properties to confirm all of them were created in the same time period. Then delete all of them
- Delete all your cookies and temporary Internet files
- Now do a full fledge search on your local drive for "EvoInst"
- use the system restore option as face recommended
- if that doesn't work then try editing your registry entries directly. This last step is rather cavalier but it works for me

:
- - Open 'run' from the startup menu
- type 'regedit' and press enter. it will take you to the windows registry entry index
- now search for 'EvoInst'. If you find any key (even after deleteing those things from windows, programe filesand other possible directories) then delete those registry entries.