Crossfire Stopped Working

*Problem Solved*

I was running x8 on both cards and x16 with one card and now I don't even have the option to enable crossfire in CCC. It says that the second card is disabled. Now I can only run x8 in the bottom PCIE slot and x1 in the upper PCIE slot. I've tried uninstalling drivers with driver sweep, reinstalling drivers, swapping out crossfire bridges, updating bios, swapping cards around but nothing seems to work. Not sure when this problem actually started but I will tell you it use to run x8 in crossfire for both cards and x16 with one card.

Here are some screen shots.

http://i464.photobucket.com/albums/rr4/383HEMI/GPUz.png

http://i464.photobucket.com/albums/rr4/383HEMI/CCC.png

http://i464.photobucket.com/albums/rr4/383HEMI/CCC2.png

If more screenshots are needed to trouble shoot please let me know and I'll post them up.

MB is an Asus M4A89GTD PRO/USB3

Thanks,

What is shown in the Diagnostics tab in the CrossFireX page in Catalyst Control Center?

edit: nvm didn't read carefully.

Have you done a full reset of your BIOS? Try;

1. Remove power cord
2. Remove CMOS battery
3. Set CMOS jumper to "clear"
4. Push power button 2-3 times holding in for a few secs each time.
5. Leave for 5 mins.

Power everything back up, enter BIOS and load setup defaults, save and exit. See if PCI-E settings have been properly restored.

Hmmmm, another 10.6 issue maybe???

CCC shows the second card as disabled. Are both cards popping up in Device Manager and enabled/working properly?

I've reset cmos properly, uninstalled and installed drivers twice, swapped pci-e power from psu. Currently only running 1 card in the x16 slot and its only running in x8. I can take that same card and put it in slot 2 and it will run at x1. If I install both cards with crossfire bridge slot 2 reads x8 and slot 1 reads x1 with no option to enable crossfire in CCC.

I'm at a loss here.

AS you taken the BIOS steps already my next suggestion would be whats been suggested. Uninstall Cats 10.6, driver sweep them, even use regedit to delete remaining ATi strings that will be kicking around, and install Cats 10.3 or 10.4. See if the issue is resolved then.

Quote:

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Originally Posted by BeepBeep2

CCC shows the second card as disabled. Are both cards popping up in Device Manager and enabled/working properly?

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Yes

http://i464.photobucket.com/albums/r...iceManager.png

http://i464.photobucket.com/albums/r...stallation.png

Also, you might want to do a reinstall of your mobo chipset drivers as well.

Quote:

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Originally Posted by Ket

AS you taken the BIOS steps already my next suggestion would be whats been suggested. Uninstall Cats 10.6, driver sweep them, even use regedit to delete remaining ATi strings that will be kicking around, and install Cats 10.3 or 10.4. See if the issue is resolved then.

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I've done the driver sweep twice and reinstalled 10.6. I'm not sure how to do the regedit thing to completely clear the drivers. How do I do that?

Thanks everyone :up: I really need to figure this out.

Quote:

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Originally Posted by Ket

Also, you might want to do a reinstall of your mobo chipset drivers as well.

---

Would I have to uninstall the old ones first or just download the same drivers off the ASUS website and overwrite the existing drivers?

Just overwrite them :up: As to the regedit thing, heres how to do it; Start>Run>type "regedit" without quotes>HKEY_LOCAL_MACHINE>SOFTWARE>delete the ATi entries.

Alrighty, gonna giver her another go.

GL :up:

Well, bad news, it didn't work. 10.3 and 10.4 didn't take for some reason. Kept getting a driver error after reboot.

I've even gone as far as installing W7 64bit on a spare drive with fresh drivers. Problems are all still there.

1. No "Enable Crossfire" option in CCC.

2. PCIE 1 only running x1

3. PCIE 2 only running x8

I should be running x8 in crossfire or x16 with a single GPU.

What the Frak!!

Here are a few more screen shots of my Registry Editor.

http://i464.photobucket.com/albums/r...MI/Regedit.png

I'm starting to wonder if there is something wrong with my MB. Help!

let me guess a MSI MB?

Quote:

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Originally Posted by B-Shot

let me guess a MSI MB?

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Asus M4A89GTD PRO/USB3

What about increase PCIE voltage in BIOS, does it change anything? (like 5-10 percent more)

I have had the same issues with the MSI boards of late which was a bios issue and the other two were bad NB and waiting on the RMA

At this point with you going as far as a fresh install and trying to install earlier drivers without success, I'd say its time to RMA the mainboard. The electronic switching gates are probably buggered.

I would say, try and clean the contacts of the GPU's, Then try swapping the 1st card into the 2nd slot. Vice Versa.

Happened to me once.

Unless those cards have been sitting in their slots for a year or more with the system being hot as hell to boot, I don't see how cleaning the contacts with a rubber would help. That said, sometimes long shots work.

Out of curiosity, change your EnableCrossfire registry string to 0x0000000 and see what happens.

Quote:

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Originally Posted by BeepBeep2

Out of curiosity, change your EnableCrossfire registry string to 0x0000000 and see what happens.

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Set Enable Crossfire to 0x0000000. No change.

Rebooted. No change.

Restart Runtime in CCC. No change.

Set Enable Crossfire back to 0x0000001. Still fracked:(

Quote:

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Originally Posted by Cookiesowns

I would say, try and clean the contacts of the GPU's, Then try swapping the 1st card into the 2nd slot. Vice Versa.

Happened to me once.

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Cleaned PCIE and bridge contacts on card with 91% Alcohol and swapped cards around numerous times. No change, other than my patience getting shorter and shorter. :shakes:

Quote:

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Originally Posted by Ket

At this point with you going as far as a fresh install and trying to install earlier drivers without success, I'd say its time to RMA the mainboard. The electronic switching gates are probably buggered.

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Well, tried 4 different fresh installs of W7 64bit on a spare hdd. 10.3, 10.4, 10.5 and 10.6 Catalyst with same problems. Exact same problems. Only one last thing to try before I pull the board out and start beating it with a ball peen hammer :mad:

Gonna try and revert bios to original version. Now I just have to figure out how to do that :confused:

Did you try just having a wet dipped q-tip or something and just try to stick it into the pci-e connector and swipe it? I know on my board it got rid alot of junk. Also if you have one of those rocket air blowers try gently blowing into the pci-e connectors on the board. I wouldn't recommend dustoff, too powerful.

It's worth a try, but from the looks of it, it seems to be your board.

Also do a inspection of the pci-e on the cards, you never know if you might find something.

You mentioned that you did many installs. When Windows hardware found comes up, it asks three questions. One is search for drivers, another is ask me later and another is don't ask again (or something like that).
If you ever, ever, say don't ask me again..you will never, never be able to use that hardware again. It's just a thought, maybe it's your case or maybe not, but I had the same issue with a monitor, that always asked to search and when I said don't ask again, I could never do anything with it.

Sounds like a hardware issue, most likely with the PCIe slots themselves. Try cleaning the slots out like Cookiesowns recommended :shrug:

I'd think that once the 1x PCIe issue is fixed, CF should enable.

Could it be a PSU issue?
I've been running a Corsair 620w for about 6 months now running 3 HDD, 2 MSI Hawk 5770s, MB, Water Pump, and 5 fans without issues. Could the PSU be on the way out and causing my cards to default to a lower setting?

PCIE slots cleaned, problems are still there.

It's not a PSU issue.

It's a motherboard/video card issue.

I had this exact same issue - tried all the same things you did; even fresh OS installs didnt work.
Turned out to be 1 of the cards was faulty. RMA'd it and got it all working again.
I know you said you tested your cards but these symptoms are EXACTLY what I had.

Hmm.... Ok. Got another thing I can try.

I have a 4670 in the closet that I can dust off and give her a run. If I install her in the x16 lane it should run at x16. If it also defaults to x8 in the x16 then it cannot be my cards.

That's weird. I know you have tried everything, but could it be possible you messed up your bios settings by accident? Especially since you are overclocking. I have had unstable OCs that I thought were stable and I went on for days without realizing the bios settings were set back to default after it restarted while I was away and I was so confused to why everything was running so slow. I would double check every setting in the bios possible. I would even bring your OC back to stock. Even try swapping ram out, and reverting to an older bios (this could be the problem actually).

Worst thing you want to do is RMA, I know how agonizing it is waiting for broken parts to come back. Have you taken a close look at the cards and the board to see if any components such as maybe resistors that are missing or look like they are missing somewhere?

maybe the xfire bridge is damaged? you got another to try?

*Problem Solved*

RMAed the motherboard and all is good now. Glad to know my GPUs are fine.

http://i464.photobucket.com/albums/rr4/383HEMI/GPU1.png

http://i464.photobucket.com/albums/r...I/GPU1GPU2.png

http://i464.photobucket.com/albums/r.../crossfire.png

Thanks to everyone for your help,
OCM :up:

Glad you got it fixed. I had a CF rig that 1 card stopped working randomly until I lightly lifted on the unsupported end of the card. Problem became more frequent until I pulled that card.