I previously used an ati 4870 i believe and it was working fine earlier. I bought an ATI HD 5770 and when i installed it i get no video, also I tried reinstalled the 4870 (that was working previously) and it doesnt show any video either. Please add insight.
PS- Was playing games earlier today, no idea what happened changing the cards.
make sure all power connections are on snug hd video card extra power connecter is plugged in all cables are snug something may have come loose happens to me every so often the 5770 about the same as a 4870 may want to return it and get a nvidia 460 1 gb ?