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SLI troubleshooting

Last response: in Graphics & Displays
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May 27, 2009 12:41:18 AM

Hello everyone,

This problem is really aggravating.
With the most recent update of my NVIDIA GeForce 9800 GX2 driver to version 8.15.11.8585, I have noticed that my SLI support does not work.

My motherboard is an ASUS M2N72-D and the Phenom I operates with Vista Ultimate 64 bit.
The SLI connector between both cards is installed.

I do not receive an error message in the NVIDIA control panel. The conprol panel instead, after clicking apply, intends to close several applications, but then reverts back to no SLI use.

What am I missing???

Also, what BIOS settings are essential for the motherboard to support SLI? I have recently installed a new sound card, and may have made some changes I cannot recapture to make the sound card work.

Thanks in advance!

More about : sli troubleshooting

a c 272 U Graphics card
a c 171 Î Nvidia
May 27, 2009 12:49:34 AM

A 9800GX2 is a single card so what SLI connector are you using?
May 27, 2009 12:52:20 AM

Mousemonkey said:
A 9800GX2 is a single card so what SLI connector are you using?


Actually, there is two of them in my system (which I should have noted down earlier).

I should also note that the screen goes blank (i.e. black) multiple times while the NVIDIA ctrl panel tries to close the applications.
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a c 272 U Graphics card
a c 171 Î Nvidia
May 27, 2009 12:56:25 AM

That makes more sense, the only thing that I can think of is the crap support that Vista 64 has for SLI be it two dual GPU cards or two single GPU cards.
May 27, 2009 12:59:57 AM

Thanks in advance for the help.

I might not be suffiently proficient to notice obvious mistakes, so any help I can check for is truly appreciated.

Also, I am certain that the system ran when the machine has been customized last year. As said, I just noticed as of today's upgrade that SLI fails.
a c 272 U Graphics card
a c 171 Î Nvidia
May 27, 2009 1:02:53 AM

Try older drivers, one may work but do not be to surprised if you have to run Vista 32 or XP 32 to get SLI to work.
May 27, 2009 1:07:41 AM

This is a good idea - I could try with the driver the card has been shipped with again and see if that still works.

As they say - the problem is always between two ears. It only depends whose ears those are. :D 
a c 272 U Graphics card
a c 171 Î Nvidia
May 27, 2009 1:14:58 AM

That's one way of looking at things :) , yeah try the first drivers that were installed and go from there just remember 'it may be an upgrade but that doesn't mean it's better'.
May 27, 2009 1:34:20 AM

Mousemonkey - you have made it to today's heroes list!

Driver 7.13.xxxx.... actually made it. Fully agreed - newer is NOT necessarily better.

Thanks a lot again for the help. :) 
a c 272 U Graphics card
a c 171 Î Nvidia
May 27, 2009 1:37:40 AM

No worries mate, happy gaming. :) 
!