Clean a scratched or dirty disc using a lint-free cleaning cloth made specifically for cleaning CDs or DVDs. These cloths are sold at computer software stores.
Clean the disc by wiping from the innermost circle out towards the edge in a straight line.
Using other materials such as a paper towel or T-shirt may scratch the disc and cause it not to function properly.
Check that the disc is compatible with your PlayStation 3 system.
Try playing different CDs, DVDs and games on the PlayStation 3 system to find out if the problem occurs with other discs.
If the problem only occurs with one disc, the disc is damaged.
If the problem occurs with all discs, there may be a fault with your PlayStation 3 system.
Try the disc in another PlayStation 3 system.
Try playing the disc on a different PlayStation 3 system (or a PlayStation 2 system, PS one system or standalone CD/DVD player, if applicable) to find out if the problem occurs on another system.