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Dual 5850's not detected. Need some help. - Page 2

post #11 of 15
Thread Starter 
Quote:
Originally Posted by fashric View Post
No it shouldn't matter that the other slot is x4 it should still work. Do both cards fans spin up on booting when you have them both installed? Its also possible that the crossfire bridge maybe defective. You should have a spare one too try if you have two cards maybe you also got one with your motherboard. You could also try with two crossfire bridges attached.
Both spin up just fine. I'll try switching out the crossfire bridge next, i have one I know works. I'd try with two as well but the sapphire xtreme 5850 only have one slot each for crossfire.

Quote:
Originally Posted by smorg View Post
corssfire can be a bit funny sometimes.. have you tried having 1 display then taking it out and pluggin it in to the second card.. it might detect and then enable, also is there any error meeages in device manager?
Device manager is completely clean with 0 errors or unknown devices. Only one 5850 appears under Display Adapters. I'll try doing that unplugging and replugging trick next.

Quote:
Originally Posted by bce22 View Post
Are you 100% certain that your Asrock motherboard is crossfire compatible? Just because the board has 2 pci-e slots does not mean it can run 2 gpus in xfire.

Before doing anything else double check the asrock website or your manual. If it is crossfire compatible out will surely state it as its a big selling point.

Id do the research for you but im on my crappy phone.

Sent from my Motorola_i1 using Tapatalk


Now that I am at a real computer I had a chance to check the specs for the ASrock M3A770DE. It does say it is crossfire compatible.
It is crossfire compatible, but this motherboard manual only lists up to the 4xxx series, so maybe it came out before the 5xxx series. I've seen several reviews of people crossfiring the 5xxx and 6xxx on this motherboard on newegg though. If none of these tips works I'll probably call asrock tech support line.

+rep for those who helped.
post #12 of 15
Are you certain that the PCI-E slot isn't dead? I had a pci-e slot die on a brand new asus p8p67 pro. Caused me quite a headache ruling out that it wasn't anything else.

Make sure both cards work in the primary slot, if one doesn't you have your answer. If both work can you run a single card off of the X4 slot? My guess is that the board makes you place a gpu in the x16 slot, but its worth a shot. I'd hate to see you bust your hump trying a million things when its a bad slot on the mobo.

Good Luck
post #13 of 15
Thread Starter 
Quote:
Originally Posted by bce22 View Post
Are you certain that the PCI-E slot isn't dead? I had a pci-e slot die on a brand new asus p8p67 pro. Caused me quite a headache ruling out that it wasn't anything else.

Make sure both cards work in the primary slot, if one doesn't you have your answer. If both work can you run a single card off of the X4 slot? My guess is that the board makes you place a gpu in the x16 slot, but its worth a shot. I'd hate to see you bust your hump trying a million things when its a bad slot on the mobo.

Good Luck
I've tried it only in the X4 slot and nothing. I actually bought two of these motherboards and the exact same problem occurs in the second one, so it's unlikely that the x4 pcie slot is broken on both boards.
I hadn't noticed this until this morning, but the card in the X4 slot always spins up to full fan speed while the x16 card is normal.
post #14 of 15
Thread Starter 
Well tech support is going pretty slow. He asked about the crossfire bridge.
post #15 of 15
same story, same problem...any new information about the problem from asrock support ?
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