Hardware

You say you've used combinations of Dell and Catalyst drivers. I just wondered if you'd checked for the latest 'Vista ATI' drivers?

If not, try this link:

http://www.vista-driver.org/query/486/radeon_x1950_crossfire_edition_

It might help.

I am going to have a guess and say that the "direct X" might be at fault here, you might have more than one "Direct X" on your system. Try and delete the "Direct X" and re-install, or downgrade to "Direct X 9" (if possible). I hope this works for you. Please post back if you have more problems.

Wow have you found a solution yet? I've got the exact same problem.

When in windows or playing a game I will get an intermittent black screen and then back to what I am doing. I have an ATI X1950XTX Crossfire installed with an ATI X1950XTX. I get the same problem when I turn crossfire off. I've even tried restoring my original ghost image (clean vista install) to see if it fixed the problem but with no luck. I have never overclocked these and they are only 2 months old. Catalyst Centre says they are running at 67 degrees. They are connected to a Dell Ultra Sharp 1908FP DVI monitor tried at 60/70/75Hz refresh rate.

I have a complete ATI certified system.

Vista Business
Core2 E6600
ASUS P5W DH Deluxe
1x ATI X1950XTX Crossfire
1x ATI X1950XTX
2GB DDR2 1066Mhz Ram
Enermax ATI Crossfire Certified Power Supply 650Watts
Antec P180 ATI Crossfire Certified Cooling Case

ATI support gave me the stupidest things to try I guess I'll try sending the Mastercard back under warranty because I can't see it being software or drivers.

I have a new single Powercolor X1950 Pro 512MB AGP card, using Catalyst 7.7 drivers on XP Pro SP2. It's been working fine for about a week. The PSU is also new, Cooler Master Extreme Power Duo 600W (dual 12V rails, 18A each). The card is powered by one of the 6-pin PCIe plugs. Last night, all of a sudden, it started doing this blank screen thing, during full screen video playback, and also when in Half-Life 2, strangely, usually during the loading screens - the game itself did play OK except for one or two blank outs I think. Typically it will blank out, then return, blank, return, blank, return etc. Once it hung completely and I had to reboot. Very frustrating since it's brand new. I don't think it's the drivers because if I recall correctly, it blanked out during a Ghost session (i.e. DOS). And I would have thought the PSU was adequate. Any ideas?