Hi trying to fix my grandson's PS4. Would appreciate thoughts and comments from the more experienced. While playing a disc game the PS4 crashed. The message came up to insert the game controller in USB port, which I did , and then installed the system file I downloaded from PS store, believe it was ver 8.03. Did an install and we were able to log into the system etc. When he went to play another game it crashed again. Did the install as per above. Thinking it may be the CD 0layer I went to download a game from the PS store. It stopped about halfway and the system crashed. Reinstalled as above. I am thinking it is the hard drive but not sure on the Cd player. Before I purchase anything would appreciate comments, or should I trash the console. Thanks in advance.