Dirty fans, wrong power cord, when you turn the system on and play the games for a few minutes it will make this very loud noises like it's

Mine makes loud noises from the spinning of the disc, but it runs smoothly with no error and I can play games with no problem.

When the system is loading during a game it makes very loud high pitched noises

The PS3 does make noise as it reads the disc, but it's not really loud

Usually I am highly satisfied with Sony, but I am slightly irritated by the loud noises this machine generates while watching a film or playing a game.

Other than that it works, no loud fan noises, hasn't overheated and works perfectly fine.

its great i never run out of space