Instructions
Hold down the power button on the console to turn it off.
Hold the power button and allow the console to power up and then power down.
Hold the power button again until you hear two beeps.
Connect your controller to the console with the usb cable when asked to do so.
Turn on the controller.
Choose option 1 in the recovery menu. This option states "Restart System: Restarts the PLAYSTATION®3 System". Your PS3 will now be rebooted.