If your xbox won't play any games it probably isn't a disk problem. More likely a hardware problem. Its very unlikely all of your disk are equally dirty or unreadable. You can also check a movie dvd since the xbox 360 will also play standard movie dvd disks.
If none of them work ....its not the disk its the xbox.
As far as cleaning them goes there are several "cleaners" available, that basically just wipe the disk surface, you can do the same thing with a lint soft cloth.
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If your xbox won't play any games it probably isn't a disk problem. More likely a hardware problem. Its very unlikely all of your disk are equally dirty or unreadable. You can also check a movie dvd since the xbox 360 will also play standard movie dvd disks.
If none of them work ....its not the disk its the xbox.
As far as cleaning them goes there are several "cleaners" available, that basically just wipe the disk surface, you can do the same thing with a lint soft cloth.