Firstly confirm the consoles connections to the power outlet and TV. It’s advisable to at all times plug your game into a rise protector to keep it safe. You must know that power surge can damage the PlayStation 3 and be the source of this problem in some cases.. Do you know what to look after next? Try and verify the connections switch off the unit manually via the onboard switch in the back, separate all cables, and then remove the hard drive.Try and see after 10 minutes reattach the cables, hit the switch, and see if this solves your problem. Try and understand what happens when ps3 beeps 3 times.. Are you aware how to fix ps3 beeping?