I have an HP Pavilion dv7-1245x that will power on (lights come on and fan runs for a brief second) but nothing will come on screen. I have been on HP forum and tried the hard reset and tried using 1 stick of ram without sucess. I have read several suggestions on the HP forum but no soild solutions were found. I have been told it may be either a power supply issue or a bad integrated graphics card. Any suggestions would be helpful.