I was playing MW3 and it came up saying disc is unreadable so I assumed I needed a new disc so I decided to go onto MW2after playing it for a while it said the disc is unreadable, this is the only two games it does it for, Black ops, cod4, guitar hero and all my other work fine. Do I need to get a laser repaired or just replace the games? Sometimes the MW3 will work for about 10 minuets then I get the unreadable error. Thanks for any help you can give