So my Sapphire 5770 finally came today. I turned my computer off, installed it into the PCI-E slot, plugged in the 6 pin adapter, plugged my monitor into it and turned it on. Yay it started working! That is till Bios load screen came up. Then it froze. So I thought ok, lets reboot. So I turned the computer off, waited, turned it back on and nothing. Just a black screen, yet I can see the HDD going to town loading stuff. Now If I switch back to my Onboard graphics card it works, no problem. But the new 5770 isnt working at all and I'm at a loss at what to do. I've disabled the onboard graphics card and tried it that way, nothing. I reset cmos, nothing. I truly am at a loss and think I might have to take this to a computer repair.