There was a problem with the Blu-ray Disc drive. Solution: Eject the current disc and re-insert it, ensuring that it is clean and free from dirt, marks or scratches. If the problem persists, attempt to load at least three different discs. If these discs load without error, the first disc may be damaged and may need to be replaced. If the replacement discs also cannot be read, visit eu.playstation.com/contact to contact Customer Support. For more tips and hints on using your PlayStation system, visit our technical support forums at community.eu.playstation.com
