Crossfire Problem

[Karaim]

Here's the situation: I have an Asus Maximus Extreme motherboard and 2 Radeon HD 3870 Diamond MM video cards in crossfire mode. My computer has been working for the last 2 months. A couple of days ago I reinstalled windows vista, and experienced the following problems:

I am no longer able to hook up my computer in crossfire mode. At first, the driver wouldn't install properly. When I finally installed the proper driver, I couldn't enable crossfire mode. I started testing my hardware.

Both of my video cards work perfectly. When I connect either video card (alone) to the main PCI x 16 slot, each one works perfectly at 1920 x 1200 resolution. However, when I connect either video card to the second PCI x 16 slot, the monitor works but only at 1600 x 1200 resolution. The proper driver CANNOT be loaded.

Is my motherboard broken? I am thinking there is a problem with the second PCI x 16 slot, and that's why I can't enable crossfire mode.

Any thoughts?

Thanks in advance.

 

[Droogie]

Well if it only stopped working after a re-install of Windows, than it's probably not a hardware issue, although that can't be ruled out. Try uninstalling the drivers, and installing them again. Make sure you download them from the manufacturers website.

Please don't post the same thread in two different sections.

 

[StrangleHold]

Like said above, it doesnt sound like a hardware problem. Sounds more like a driver issue.