So a friend of mine built a new computer and used the hard drive from his old alienware to save money. This apparently caused the Windows 7 on it to become counterfeit and ever since he's had issues with various things throughout the system. Now the computer will boot up and load to just before the log in menu, but it just goes black and does nothing with the curser just sitting there. Is there compatibility issues here? Does he have to wipe the hard drive somehow and install a new copy of windows? Im lost