Odd problem that I had posted once before about here
I just received a new PSU and new 6850 and decided to give the build another go.
I am having the same problem as I posted above, but let me recap since this is a different forum area;
GA-73PVM-S2H mobo with core 2 duo CPU
had a Radeon 4350 Videocard (PCI-E but no power leads or fans) that I was upgrading to a Radeon 6850 (1 Power lead and fan).
Everything plugged in with the 4350 and the system boots and works fine.
Install the 6850 and i get no video signal and the video card runs at full fan (sounds really loud)
Sent the 6850 out and got a replacement
Purchased a spare PSU to try
Same results... 4350 fine, 6850 jet plane and no work.
Mobo has onboard video with the system kicks over to after a few seconds, boots fine but of course doesn't detect the video card at all.
I have all the video drivers uninstalled before I tried the switch, but since this is a boot problem i doubt that it will impact.
I tried pulling the bios battery with no luck as well.
The only thing I can think to try still is replacing the motherboard, but I don't know for the life of me why the 6850 doens't work. I've tried it in my i7 machine and it works fine, but not this machine.