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Added 2nd video card and crossfire now windows is super slow to load

Last response: in Graphics & Displays
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June 22, 2010 12:44:33 AM

I just added a 2nd 5970 and hooked it up via cross fire.. windows is super slow to load. Took it about 20 mins just to see the desktop. All I see is a black screen and my mouse pointer. I can move it around and stuff too..

Then finally it flashed the desktop on but everything is going so slow.

Any idea what is going on? The cards are different in that one is an asus the other is a sapphire but that shouldn't matter.

Something with the drivers maybe?
June 22, 2010 12:51:43 AM

Does not matter which brand of cards with ATI, I used a visiontek 4870x2 and a XFX 4870 in tri-fire mode for the longest time. (Nvidia is a different story, I try to match the brands up with them)

Use CCC and disable crossfire and see if the system speeds up
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June 22, 2010 12:59:51 AM

I honestly can't even get CCC open.. I tried to open it already about 10 minutes ago.. The desktop finally came up and a driver installation box came up that says its searching preconfigured driver folders for "video controller"

i'm getting windows errors "superfetch has stopped working" and other crap like that..
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June 22, 2010 1:02:13 AM

Can you post the rest of your system specs so I can get a better idea of what you're working with?
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June 22, 2010 1:06:42 AM

(2) 5970 crossfire'd
i7 920
Corsair tx850w
6gb ram
windows vista ultimate
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June 22, 2010 1:08:37 AM

What about your motherboard and boot drive? Those were the ones that I really need to know about.
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a b U Graphics card
June 22, 2010 1:10:40 AM

is an 850w corsair REALLY sufficient for 2x 5970? I mean, aren't the graphics cards alone 600w?
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June 22, 2010 1:15:50 AM

asrock x58 mobo.. 320gb sata drive seagate i think on the HD.. 850w might not be enough.. seems like i'd be having different problems than this tho..
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June 22, 2010 1:17:12 AM

The driver installation keeps popping up even tho i've killed it twice. It's stuck on "searching preconfigured driver folders" for "video controller(vga compatible"
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a b U Graphics card
June 22, 2010 1:18:54 AM

Test your cards one at a time, be sure both operate normally on their own.

If both turn out ok, try running one card in the second slot only, to be sure your second PCI-E slot isn't defective.
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June 22, 2010 1:24:43 AM

I would try JofaMang's advice. I can't really gather what would be causing your problems. It sounds like either the combination of the two 5970s is causing something, you don't have enough power, something may be overheating, or perhaps some of your RAM modules aren't seated properly. It's possible you may have dislodged them a bit when installing those big cards.
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June 22, 2010 1:30:46 AM

ok cards are working fine by themselves in both slots.. could just be the PSU I guess. Seems sorta odd that it would cause this.. seems like if it couldnt draw enough processing power it wouldn't boot at all..

still sorta leaning towards driver issue..
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June 22, 2010 1:36:48 AM

If all the hardware works ok, then it is most likely a software issue. Since the drivers you had for the single 5970 were working fine, they should also be fine for the two cards in crossfire since they are all pretty recent, though I would recommending installing the 10.6 Catalyst Drivers if you can. Have you run antivirus and spyware scans lately?
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June 22, 2010 1:37:58 AM

It sounds like a driver issue. Remove old drivers, cleansweep and reinstall. That should fix the problem. Also, is it slow when going in safe mode? If not, it is obviously the drivers and not your PSU or VGAs.
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June 22, 2010 1:47:35 AM

ok with 1 card in i'm installing 10.6.. Once that's done I'll throw the other back in and see if that works.. Is there any crossfire specific things I should do before I throw the 2nd card in?
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June 22, 2010 2:00:48 AM

No, nothing crossfire specific. Just make sure that you do a few things when you install a new driver.
1. Uninstall the old driver.
2. Run DriveSweeper in safe mode then reboot.
3. Install the new driver and reboot once more.
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June 22, 2010 2:08:40 AM

I looked at ATI's website, at it seems that they have been having driver problems with windows vista, though I wasn't sure if is was on the 32 bit or 64 bit versions or both.
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June 22, 2010 2:15:03 AM

no dice still not working.. got the new drivers installed and working and windows was booting fine and all that.. add the 2nd and crossfire and it just goes into super slow boot mode..


also is super slow to boot to safe mode..
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June 22, 2010 4:39:10 AM

its gota be PSU.. getting bsod now..
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a b U Graphics card
June 22, 2010 5:03:01 AM

Yes, must be the PSU. A 5970 (basically two 5850s in performance) has a power draw of up to 300 watts at stock.

Two of them makes that up to 600 watts for the graphics cards alone. Add in the CPU, mobo, HDD, DVD drive, RAM, etc and your PSU definitely can't handle it...
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June 22, 2010 5:50:16 AM

b9er said:
no dice still not working.. got the new drivers installed and working and windows was booting fine and all that.. add the 2nd and crossfire and it just goes into super slow boot mode..


also is super slow to boot to safe mode..


I believe you can rule out the drivers then.

Try this: Try different cables for powering the VGAs (i don't know if your PSU has single or multiple rails) but it is worth a shot as one could be defective or some other reason to not handle the load.

Also it is worth checking your motherboard (did you flash to the latest BIOS?) and check the manufacturer's website for other people with similar problems.
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June 22, 2010 5:53:14 AM

Bluescreendeath said:
Yes, must be the PSU. A 5970 (basically two 5850s in performance) has a power draw of up to 300 watts at stock.

Two of them makes that up to 600 watts for the graphics cards alone. Add in the CPU, mobo, HDD, DVD drive, RAM, etc and your PSU definitely can't handle it...



I will have to disagree with you. No VGA draws maximum power while just booting into Windows. So his 5970 will not draw 300W+300W. Not even close. Actually his power supply is a really good one and if his system is not overclocked it should cope with the rest of the setup fine.

Now what the condition of the PSU is... that is another story... it could be faulty, old, worn out, etc etc etc...
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June 22, 2010 11:49:24 AM

My CPU is OC'd to 3.6ghz..

Only thing that is making me believe it could be the PSU is that after windows takes forever to even get to the login screen I'm getting BSOD now.


The PSU should be in fine condition. Only 1 year old.
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June 22, 2010 2:18:07 PM

What PSU you guys think I should go with? Assuming it is a PSU issue?
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a b U Graphics card
June 22, 2010 2:31:53 PM

It might be a bit overkill (or not if you want your PSU investment to last for many years even with natural degredation) but this is a very well reviewed product from one of the best PSU testing sites I have personal come across:
http://www.jonnyguru.com/modules.php?name=NDReviews&op=...

If your current PSU is under warranty, it might be economically viable to try obtain service on it.
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June 24, 2010 12:02:47 AM

got a new PSU..

same issue :fou: 

Has to be something with windows. It takes forever to load. but when it does it runs super slow. Then it keeps trying to find drivers to install but never finds anything to install..

I'm on windows vista 64 bit and I have a heck of a time uninstall and install ATI's crap. Have to do it via the command line and when I try to uninstall it crashes..

So I'm at a loss at this point.. I'm seriously considering wiping this stupid thing and starting over but have a sneaking suspicion that wont fix my problems either..
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June 24, 2010 12:37:46 AM

Quick fix, FedX me one of those 5970's, and go back to when it worked........=)
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Best solution

June 24, 2010 1:11:41 AM

b9er said:
got a new PSU..

same issue :fou: 

Has to be something with windows. It takes forever to load. but when it does it runs super slow. Then it keeps trying to find drivers to install but never finds anything to install..

I'm on windows vista 64 bit and I have a heck of a time uninstall and install ATI's crap. Have to do it via the command line and when I try to uninstall it crashes..

So I'm at a loss at this point.. I'm seriously considering wiping this stupid thing and starting over but have a sneaking suspicion that wont fix my problems either..



Did you visit your motherboard's manufacturer site for a newer BIOS or driver hotfix like i said earlier?
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a c 273 U Graphics card
June 24, 2010 1:24:53 AM

b9er said:
got a new PSU..

same issue :fou: 

Has to be something with windows. It takes forever to load. but when it does it runs super slow. Then it keeps trying to find drivers to install but never finds anything to install..

I'm on windows vista 64 bit and I have a heck of a time uninstall and install ATI's crap. Have to do it via the command line and when I try to uninstall it crashes..

So I'm at a loss at this point.. I'm seriously considering wiping this stupid thing and starting over but have a sneaking suspicion that wont fix my problems either..

So what PSU did you end up getting? Was it the 1200w jobbie? Which would have been a bit overkill considering those cards are only supposed to need about 240w each.
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June 24, 2010 2:02:52 AM

Best answer selected by b9er.
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June 24, 2010 2:03:37 AM

my bad darguset.. that was the right thing to do..

Updated the bios and bam it's back.

Thanks!!!!
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a c 273 U Graphics card
June 24, 2010 2:06:09 AM

Are you using the new PSU or have you tried the old one?
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June 24, 2010 2:08:46 AM

b9er said:
my bad darguset.. that was the right thing to do..

Updated the bios and bam it's back.

Thanks!!!!



Glad you fixed your problem mate! Enjoy your new VGA!

Technology is moving at such a fast pace, that manufacturers can't keep up and with so many players in the market, it takes them a lot longer to provide stable drivers, BIOSes, etc... on the other hand they need to make money too, so they release their products a bit prematurely and provide hotfixes later.

Best tactic is to wait a couple of months before buying something, to wait for any major problems to get ironed out.

Congratulations again!
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