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Windows 7: Problem with 7 Ult X64 Recognizing 2nd Video Card


10 Mar 2011   #1

Win7 Ult x64
 
 
Problem with 7 Ult X64 Recognizing 2nd Video Card

I have 2 EVGA GTX570HDs, I want to run them in SLI on my XFX 790i Ultra SLI Motherboard. i have qx9650 and 4gigs of ram. I just reinstalled windows 7 ultimate clean install. But windows 7 isnt seeing the 2nd Video card. On top of that when i activate 2 monitors which ever is my primary screen ( with start menu and all) will flicker while the 2nd screen is flicker free. When i go back to one monitor ( either of them) it doesnt flicker at all.


Full System Specs

OS: Windows 7 Ultimate
Version: 6.1.7600
System Manufacture?: XFX79U
System Model: XFX 790i Ultra SLI
System Type: x64
Processor: Intel Core 2 Extreme CPU X9650
BIOS: Version Phoenix Technologies LTD P09 10/26/2009
SMBIOS: 2.4
Installed Physical Memory 4.00 GB
Graphics: Nvidia Geforce GTX 570
Sound: 4x Nvidia HD Audio, 1x Realtek HD Audio
HDD: OCZ Vertex 2 SSD 120GB

My System SpecsSystem Spec
.

10 Mar 2011   #2

Microsoft Community Contributor Award Recipient

Windows 7 x64
 
 

Are you certain you meet the power requirements for 2 570's?
Also is the sli bridge connected solidly.
My System SpecsSystem Spec
10 Mar 2011   #3

Win7 Ult x64
 
 

The SLI Bridge is attached and is on firmly. The Power Supply is a 1200W Single Rail Silverstone Power Supply Gold Rated.

Device manager isnt even recognizing theres a 2nd Video card at all
My System SpecsSystem Spec
.


10 Mar 2011   #4

Windows 8.1 Pro
 
 

Sir your issue is not a "Windws 7" issue per se but eithier a driver or hardware issue. Windows 7 is more than capable of allowing SLI/Crossfire configurations to run.

You need to check that the second card is working, the drivers are properly configured, the card is properly fitted in the slot, and that the card is getting power.
My System SpecsSystem Spec
10 Mar 2011   #5

Win7 Ult x64
 
 

Quote   Quote: Originally Posted by sygnus21 View Post
Sir your issue is not a "Windws 7" issue per se but eithier a driver or hardware issue. Windows 7 is more than capable of allowing SLI/Crossfire configurations to run.

You need to check the the second card is working, that the drivers are properly configured, that the card is properly fitted in the slot, and that the card is getting power.

Both Cards are getting power. I Tested both card individually in the one slot. I also test the slot the im using the 2nd video card in by inserting a x8 PCIe Raid card from Promise in it. Boots up and is recognized. So its not the motherboard or the video cards. both cards are getting 4 seperate 6 pin cables straight from the power supply.

This is a windows issue not a driver issue. its a fresh install.
My System SpecsSystem Spec
10 Mar 2011   #6

Microsoft Community Contributor Award Recipient

Windows 7 x64
 
 

If it was a windows issue there would be hordes of people with your card configuration complaining.

You are actually the first I've seen with this problem.

I ran to xfx's website to check on your board model and the first thing I saw when attempting to log in was
Quote:
IMPORTANT MESSSAGES


The XFX AMD Catalyst has been updated to version 11.2 please login to see if this is recommended for your card.
The XFX Nvidia Driver has been updated to version 258.96 please login to see if this is recommended for your card.
The XFX HD Audio Driver has been updated to R2.53 please login to see if this is recommended for your Mainboard.
We recommend updating the BIOS on your XFX Nforce 790i SLI ( MB-N790-IUL9 ) to version P09.
We recommend updating the BIOS on your XFX Nforce 780i SLI ( MB-N780-ISH9 ) to version P08.
We recommend updating the BIOS on your XFX Nforce 750a SLI ( MD-A72P-7509 ) to version 1.7.
We recommend updating the BIOS on your Nforce 680i LT ( MB-N680-ILT9 ) to version P08.
We recommend updating the BIOS on your Nforce 680i SLI ( MB-N680-ISH9 ) to version P33.
We recommend updating the BIOS on your Nforce 650i Ultra ( MB-N650-IUL9 ) to version P05.

My System SpecsSystem Spec
10 Mar 2011   #7

Windows 7 Ultimate 64 bit
 
 

Check your refresh rates for both monitors and try switching the refresh rate of the monitor that's flickering.
My System SpecsSystem Spec
10 Mar 2011   #8

Windows 8.1 Pro
 
 

I would suggest the OP fill in his full system specs.

Please see this tutorial on filling out system specs as well as my How To Ask For Help guide.
My System SpecsSystem Spec
10 Mar 2011   #9

Win7 Ult x64
 
 

Full System Specs

OS: Windows 7 Ultimate
Version: 6.1.7600
System Manufacture?: XFX79U
System Model: XFX 790i Ultra SLI
System Type: x64
Processor: Intel Core 2 Extreme CPU X9650
BIOS: Version Phoenix Technologies LTD P09 10/26/2009
SMBIOS: 2.4
Installed Physical Memory 4.00 GB
Graphics: Nvidia Geforce GTX 570
Sound: 4x Nvidia HD Audio, 1x Realtek HD Audio
HDD: OCZ Vertex 2 SSD 120GB
My System SpecsSystem Spec
10 Mar 2011   #10

Windows 8.1 Pro
 
 

Quote   Quote: Originally Posted by rb504c View Post
Full System Specs

OS: Windows 7 Ultimate
Version: 6.1.7600
System Manufacture?: XFX79U
System Model: XFX 790i Ultra SLI
System Type: x64
Processor: Intel Core 2 Extreme CPU X9650
BIOS: Version Phoenix Technologies LTD P09 10/26/2009
SMBIOS: 2.4
Installed Physical Memory 4.00 GB
Graphics: Nvidia Geforce GTX 570
Sound: 4x Nvidia HD Audio, 1x Realtek HD Audio
HDD: OCZ Vertex 2 SSD 120GB
Thanks but when this thread moves to another page your system specs will be hidden/lost. That's why I posted this..... Please see this tutorial on filling out system specs

And you might want to visit some of the Nvidia forums to see if your issue has been reported there and a solution found.
My System SpecsSystem Spec
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 Problem with 7 Ult X64 Recognizing 2nd Video Card




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