hello why does my new mac go to tray screen and not start when u s b items are plugged in it use to work fine
hello when i now turn on or try to turn on my mac goes gray and will not start, if i pull out all the cables from the back it works, i have done a hardwear test and it comes up fine, when this mac was new it had a new hard drive as the first broke, so whats wrong here can someone please advise thanks adam