Both of them are right especially Digger. *For the CD to be read the laser must bounce off the CD to read the information. *If a scratch is detected youll hear the Playstation making the "loading" noise over and over again. *ITs trying to find the next set of coding. *Try not to scratch your games and keep the system dust free, must problems occur because of bad maintenance on our part. *Buy a can of air, this is also good with your PC to clean out the dust. *This cools the CPU and has better response.