Have an Hp Envy Phoenix, model: h9-1300t, with windows 8.1. I have an upgraded GPU (Sapphire Radeon HD7950) and tried to upgrade the power supply to an EVGA 850W. After successfully installing my PSU when my computer boots up it now beeps 6 times and no display shows up. I reseated my GPU and RAM and have tried resetting CMOS. Also, after my computer stops beeping if i hit ctrl + alt + delete my computer restarts and begins beeping again. I have tried everything to my knowledge and just about every solution I could find to no avail. Please any help is greatly appreciated.