Just turn the ps3 off, but don't flip the switch on the back off. The red light should be showing. Then press and hold the power button. Keep holding it after it's turned on until it has beeped again. You should have to hold it for about 4 seconds. The screen will flash a few times and then return to the non HD settings. I brought my ps3 over to a different house that didn't have an HDTV and this worked for me.