Got a new PS3 and trying to get it set up. Initially connected up to screen via HDMI and got the setup menu. After selecting 'english' it came up with a message saying 'HDMI connected detected', I accepted this and then it just seemed to hang and would not recognise any buttons. I left it a few minutes then turned it off. Now when I try again I get no video output to the screen at all. I have tried it using the HDMI connection, and also with the suppied composite cable and nothing is being output to the screen. Is there a way to reset the PS3 and start again? I have tried turning it on and waiting 5 seconds for a bleep, but it just seems to turn itself off again. Have I got a faulty unit, or is there anything else i can try?