I have a HIS HD4870 512mb, and I just bought an ASUS HD4870 1gb. When I tried to Crossfire them, my window 7 ult won't start. It stop and restart when you see the window logo appear. I tested each cards, and they work fine Individually. Please advice?
More about :window wont start crossfiring ati card
My PSU is an OCZ I just bought along with the new VGA.
Well, I checked my BIOS, but I really dont know what should I be looking at? I reset the BIOS, Install each card individually and update their driver. Installed CCC from the CD and even try to update it from ATI main site. Still my window won't boot. Please advice?
Just wanna make sure. With one GFX card installed, you uninstalled the video drivers, cleaned the registry of any driver remnants, turned off the machine, installed the two cards, tried to boot and no go ? Are both cards running at same clock speeds ?
I tried all of the above but no go! Yes they hav the same clock speed and mem! And my 1gb is the main one! But some how when I reinstall the bios n update it, its work now! Thx for everything guys, I learned alot! But my screen is flickering, I wonder where is that came from?