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Dual 5850's not detected. Need some help.

post #1 of 15
Thread Starter 
Well this is ticking me off, I can't get the second 5850 to be detected on an ASROCK M3A770DE. I have two sapphire xtreme hd 5850's, a 600W PSU and catalyst 11.5 installed. I can switch both cards positions and both work on one display.
I can't get CCC to detect it and enable crossfire, windows 7 won't detect the second one either even when 2 monitors are plugged in.

I don't know what the deal is, I'm about to try an older catalyst version and see if that does anything.

Rep for any help.
post #2 of 15
This is going to sound completely stupid (I know), but I've seen it happen before so I have to ask... are the power connectors plugged all the way in? (Yes, I am very serious.)
 
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post #3 of 15
Thread Starter 
Quote:
Originally Posted by onoz View Post
This is going to sound completely stupid (I know), but I've seen it happen before so I have to ask... are the power connectors plugged all the way in? (Yes, I am very serious.)
Lol, it's a typical question I know. The power connections are all set. I forgot to mention both fans spin up just fine, no beep codes or anything.
post #4 of 15
Next I'd make sure the crossfire bridge is securely connected. After that, I'd go to the Device Manager, uninstall all display adapters, and scan for new hardware changes. If that doesn't fix it, I'd move onto checking the BIOS to see if there's some kind of Crossfire/SLI option that you need to enable.

I just googled this problem you're having, and someone on another forum mentioned that they fixed this problem by reinstalling their sound drivers...? (This isn't part of my suggestion, I just posted it because I thought it was funny, hahaha).
 
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post #5 of 15
Thread Starter 
Quote:
Originally Posted by onoz View Post
Next I'd make sure the crossfire bridge is securely connected. After that, I'd go to the Device Manager, uninstall all display adapters, and scan for new hardware changes. If that doesn't fix it, I'd move onto checking the BIOS to see if there's some kind of Crossfire/SLI option that you need to enable.

I just googled this problem you're having, and someone on another forum mentioned that they fixed this problem by reinstalling their sound drivers...? (This isn't part of my suggestion, I just posted it because I thought it was funny, hahaha).
I've tried all of that... except the sound issue. I don't have any sound drivers but the ones W7 came with lol.

I'm going to uninstall CCC, driversweeper it then reinstall with the crossfire bridge on again...
post #6 of 15
Install the drivers while the crossfire bridge is off then turn off the pc put it back on and see if that works Hope that helps .
post #7 of 15
Thread Starter 
Quote:
Originally Posted by crunkazcanbe View Post
Install the drivers while the crossfire bridge is off then turn off the pc put it back on and see if that works Hope that helps .
Tried that, not getting anywhere here

Could it be that the second slot is PCIE x4? It should still detect it. This is annoying as hell..

Did a sweep of all video drivers and reinstalled with both cards and crossfire bridge and still nothing.
post #8 of 15
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.
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post #9 of 15
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?
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post #10 of 15
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.
Edited by bce22 - 5/17/11 at 6:49am
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