Recently my computer's bios got messed up and i had to send it to hp for repair. Before this i had installed a Radeon 6850 on my motherboard and it ran fine with the psu i bought. When my computer got back it would only run off the onboard graphics an not my 6850. I assumed that it had gotten messed up alomg with the rest of my computer so i bought a new 6870 to replace it. I just installed it and it wont give a signal either. Does anyone know what the problem could be?
this is the tower i have http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&dlc=en&docname=c02995511&lc=en&product=5157024
this is the tower i have http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&dlc=en&docname=c02995511&lc=en&product=5157024