First and foremost make sure the systems connections to the power outlet and TV. Do you know that you should always plug your gaming console into a rise protector to keep it safe? Are you aware that power rush can damage the PlayStation 3 and be the source of this problem in some cases?. After you’ve verified the connections switch off the unit manually via the onboard switch in the rear, cut off all cables, and then remove the hard drive.Ensure after 10 minutes,  reattach the cables, hit the switch, and see if this solves your problem. As a ps3 player, you should know what happens when ps3 beeps 3 times.. ps3 troubleshooting