Actually it was working fine till one i wanted to play Metal Gear Solid 4 so it asked for a system upgrade for the version 2.70 and after having done that the ps3 does not respond to the new as well as old games so please help me out guys.If u find the repair software over the net then please send the link in ur answers or if u have another method of solving the problem then do suggest because i have already taken it to the service centres of sony but they havent been able to fix it