I purchased a m17 alienware laptop it had vista operating system i changed it to windows 7 but the alienware software doesnt seem to work properly i tried to go back to xp64 but i keep getting errors im sure there is a way to make 7 work but i really want to go back to xp64 for now the error that im getting says i may have a virus followed by a long list of numbers for an error code any ideas on how to correct this also is there any tutorials on setting up alienware thanks