A "This copy of Windows is not genuine" warning does not always mean you have a pirate copy installed...it may just be the wrong type.. if you have a multilingual pack installed it is not supported on the following editions of wndows 7
Starter
Home Basic
Home Premium
Professional
you might be able to fix it form microsoft support from this link:
"This copy of Windows is not genuine" warning when MUI packs are installed in Windows 7