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Any able to get crossfire working with Windows 7 RC?

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May 19, 2009 7:55:05 PM

I am about to build my machine, not sure which one OS to use. I downloaded Windows 7 RC, but my machine has 2 ati cards for CF, so I am not sure if I should use windows 7 RC.

Anyone tried yet?
a b $ Windows 7
May 20, 2009 1:06:07 AM

Mine (2 Sapphire 4870x2s) is working flawlessly with the RC and Catalyst 9.4.
May 23, 2009 4:25:19 AM

Same here. Same cards, but with CCC 9.5. ;) 
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June 14, 2009 6:29:02 PM

How did you get Crossfire working with windows 7? What build are you using?
I am running build 7100 and have 2 4870's but I've have had to disable one card just to get it to boot to windows without crashing.
I am also getting errors when trying to install the latest CCC somthing about the HD audio not installed correctly. Then started to get random crashes and on each reboot the gfx drivers were missing? had to revert to an older driver and have binned CCC at the moment, its stable but still cant activate the second card.

I dont think Im the only one with this problem searching google.
June 14, 2009 8:31:59 PM

Sounds like it could be faulty hardware to be. Did you have those cards working in crossfire under a different OS, or is this a fresh build? I am running build 7100 also with no problems.
June 15, 2009 12:44:48 PM

Yes both cards worked in vista 64. The diagnostic leds do not point to a hardware failure, however I will swap the cards around to see if I can pinpoint a fault with one particular card. Its a bit difficult tho as there all connected with pipes and liquid.
June 16, 2009 11:16:50 PM

I am running build 7100 also and have 2 Sapphire Toxic 4890's in CF working fine and started on 9.5, and now updated to 9.6 Catalysts.
June 17, 2009 7:17:24 AM

Ok I guess its either a faulty card or PCI-EX slot in my case then.
June 17, 2009 4:31:17 PM

its not the cards...I am running the ati 4850's and one card is automatically disabled (just upgraded from xp to 7) I am trying to figure out how to enable the 2nd card.

if you go into the information center of the ATI user interface you will almost certainly see that one card is disabled, this indicates that the machine sees it, but the software has not turned it on...if I get mine all Ill post the solution.
June 18, 2009 8:05:20 AM

I just found an updated bios for my mobo (foxconn blackops) it may fix the problem,
will let you know later.
June 19, 2009 10:00:50 AM

Updated the bios, tried to update the driver to 9.6 still no joy. BSOD half way through install. Decided just to remove the card and sell it, took all the watercooling off disassembled computer then re-assembled got to the stage of putting all the power connectors on. It was at this point that I noticed one of the PCI-EX connectors had worked loose from the PSU. So this is prob the reason for all the faults only 50% power on one card. Shame I didnt spot it earlier. Oh well another evening wasted.
Anonymous
a b \ Driver
a b $ Windows 7
October 31, 2009 2:53:44 PM

FlyingVagrant said:
its not the cards...I am running the ati 4850's and one card is automatically disabled (just upgraded from xp to 7) I am trying to figure out how to enable the 2nd card.

if you go into the information center of the ATI user interface you will almost certainly see that one card is disabled, this indicates that the machine sees it, but the software has not turned it on...if I get mine all Ill post the solution.


Did you ever figure this out? I am having the same problem. Need Help.
November 4, 2009 1:32:06 AM

I am having the same problem 2 4850s and windows 7 upgrade..I sat on the phone with dell for hours tried installing older versions..dell told me to go back to vista till they fix the problem..i hope some one knows how to fix this because this is retarded too many people with the same problem
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