8400 GS Windows 7-64 bit; no dual view! Windows 7 drivers do not allow second screen
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I have just installed clean version of Windows 7 64 bit.
I have been happily running with an 8400 GS and dual view enabled on XP Professional, giving me a second screen to the right of my main screen, working off the DVI out with an adapter to the usual monitor connection.
W7 would not intiially complete its installation, and I had to use F8 option and start in 640x480, then it worked but with only VGA on one screen.
I then installed NVidia's latest driver, 191.07, and did not get my second screen, even though the nvidia control panel shows me that it is there and working.#
That same driver version caused the same problem in my Windows XP 32 bit and there I have been able to downgrade using the archived driver version 182.50 to get back my dual screens.
But the 185.85 which is the earliest Windows 7 WHQL driver does not do the same for Windows 7. I have also tried the 190.62 driver which has been mentioned on the forums as very stable but with no luck.

So it appears I can have an XP PC with two screens, or a W7 PC with one screen.

Has anyone come across this or have any other ideas?
I have just installed clean version of Windows 7 64 bit.

I have been happily running with an 8400 GS and dual view enabled on XP Professional, giving me a second screen to the right of my main screen, working off the DVI out with an adapter to the usual monitor connection.

W7 would not intiially complete its installation, and I had to use F8 option and start in 640x480, then it worked but with only VGA on one screen.

I then installed NVidia's latest driver, 191.07, and did not get my second screen, even though the nvidia control panel shows me that it is there and working.#

That same driver version caused the same problem in my Windows XP 32 bit and there I have been able to downgrade using the archived driver version 182.50 to get back my dual screens.

But the 185.85 which is the earliest Windows 7 WHQL driver does not do the same for Windows 7. I have also tried the 190.62 driver which has been mentioned on the forums as very stable but with no luck.



So it appears I can have an XP PC with two screens, or a W7 PC with one screen.



Has anyone come across this or have any other ideas?

To make mistakes is human, but to really mess it up requires a computer.

#1
Posted 10/22/2009 02:30 PM   
[quote name='Fellwalker' post='603914' date='Oct 22 2009, 04:30 PM']Has anyone come across this or have any other ideas?[/quote]
Same problem here, got a 8800 GTS. Dual monitoring works only after plugin in and out both monitors many many times. i tried every driver no change there. funny thing is with win7 rc1 x64 everything worked fine :(
[quote name='Fellwalker' post='603914' date='Oct 22 2009, 04:30 PM']Has anyone come across this or have any other ideas?

Same problem here, got a 8800 GTS. Dual monitoring works only after plugin in and out both monitors many many times. i tried every driver no change there. funny thing is with win7 rc1 x64 everything worked fine :(

#2
Posted 10/22/2009 03:58 PM   
[quote name='FranzP' post='603931' date='Oct 22 2009, 11:58 AM']Same problem here, got a 8800 GTS. Dual monitoring works only after plugin in and out both monitors many many times. i tried every driver no change there. funny thing is with win7 rc1 x64 everything worked fine :([/quote]


I'm also having the same problem. Everything worked fine in Win7 RC x64 for me as well. I had dual view on my 7950GX2 and most of my drivers were actually found by the RC!!!

I just installed win7 Professional x64 on my PC and the current Nvidia driver will not work. I keep getting a "not digitally signed" message in my device manager. The default driver microsoft installs works for 1 monitor but I can't EXTEND my desktop to the 2nd, I can only have 1 monitor on at a time or display the same on both monitors.

Tried rolling back to a few other drivers with no luck, a few give me a black screen with the mouse arrow....if anyone knows of a working nvidia driver please let me know!!!

Intel Core Quad E6600 OC 3.0Ghz
EVGA 780i SLI Motherboard
8GB DDR2 Memory
EVGA 7950GX2
320GB SATA HD & 750GB SATA HD
[quote name='FranzP' post='603931' date='Oct 22 2009, 11:58 AM']Same problem here, got a 8800 GTS. Dual monitoring works only after plugin in and out both monitors many many times. i tried every driver no change there. funny thing is with win7 rc1 x64 everything worked fine :(





I'm also having the same problem. Everything worked fine in Win7 RC x64 for me as well. I had dual view on my 7950GX2 and most of my drivers were actually found by the RC!!!



I just installed win7 Professional x64 on my PC and the current Nvidia driver will not work. I keep getting a "not digitally signed" message in my device manager. The default driver microsoft installs works for 1 monitor but I can't EXTEND my desktop to the 2nd, I can only have 1 monitor on at a time or display the same on both monitors.



Tried rolling back to a few other drivers with no luck, a few give me a black screen with the mouse arrow....if anyone knows of a working nvidia driver please let me know!!!



Intel Core Quad E6600 OC 3.0Ghz

EVGA 780i SLI Motherboard

8GB DDR2 Memory

EVGA 7950GX2

320GB SATA HD & 750GB SATA HD

#3
Posted 10/23/2009 12:29 PM   
[quote name='kirbs32686' post='604284' date='Oct 23 2009, 01:29 PM']I'm also having the same problem. Everything worked fine in Win7 RC x64 for me as well. I had dual view on my 7950GX2 and most of my drivers were actually found by the RC!!!

I just installed win7 Professional x64 on my PC and the current Nvidia driver will not work. I keep getting a "not digitally signed" message in my device manager. The default driver microsoft installs works for 1 monitor but I can't EXTEND my desktop to the 2nd, I can only have 1 monitor on at a time or display the same on both monitors.

Tried rolling back to a few other drivers with no luck, a few give me a black screen with the mouse arrow....if anyone knows of a working nvidia driver please let me know!!!

Intel Core Quad E6600 OC 3.0Ghz
EVGA 780i SLI Motherboard
8GB DDR2 Memory
EVGA 7950GX2
320GB SATA HD & 750GB SATA HD[/quote]
I have tried every driver on the Nvidia web site - looking in beta and archived to find them. The two drivers for W7beta were "not for this version of windows". Each of the others would install and give one screen, up to the latest 191.07, but none of them gave me my second screen. I cannot even get the same on both screens. The NVIDIA control panel insists that my main screen is "2" and my blank screen (the one on the DVI out) is "1". IN XP using driver 162.50 the main screen was "1".
[quote name='kirbs32686' post='604284' date='Oct 23 2009, 01:29 PM']I'm also having the same problem. Everything worked fine in Win7 RC x64 for me as well. I had dual view on my 7950GX2 and most of my drivers were actually found by the RC!!!



I just installed win7 Professional x64 on my PC and the current Nvidia driver will not work. I keep getting a "not digitally signed" message in my device manager. The default driver microsoft installs works for 1 monitor but I can't EXTEND my desktop to the 2nd, I can only have 1 monitor on at a time or display the same on both monitors.



Tried rolling back to a few other drivers with no luck, a few give me a black screen with the mouse arrow....if anyone knows of a working nvidia driver please let me know!!!



Intel Core Quad E6600 OC 3.0Ghz

EVGA 780i SLI Motherboard

8GB DDR2 Memory

EVGA 7950GX2

320GB SATA HD & 750GB SATA HD

I have tried every driver on the Nvidia web site - looking in beta and archived to find them. The two drivers for W7beta were "not for this version of windows". Each of the others would install and give one screen, up to the latest 191.07, but none of them gave me my second screen. I cannot even get the same on both screens. The NVIDIA control panel insists that my main screen is "2" and my blank screen (the one on the DVI out) is "1". IN XP using driver 162.50 the main screen was "1".

To make mistakes is human, but to really mess it up requires a computer.

#4
Posted 10/24/2009 01:11 PM   
Have the exactly the same problem running windows 7 proffesional 32bit. OS picks up the second monitor, but no signal sent to it. Tested with other Graphic Adapters and problem definately related to Geforce card / Drivers. Card worked fine in vista with extended desktop. Tried all drivers (including beta).
Have the exactly the same problem running windows 7 proffesional 32bit. OS picks up the second monitor, but no signal sent to it. Tested with other Graphic Adapters and problem definately related to Geforce card / Drivers. Card worked fine in vista with extended desktop. Tried all drivers (including beta).

#5
Posted 11/11/2009 08:17 AM   
Thisis sadly not getting anywhere. This is what I had from ASUS tech support a fortnight ago (the card is an ASUS branded NVIDIA). I have also posted on their forums and approached NVIDIA but not heard anything. I'll remind each of them.

Dear Jim,

Thank you for contacting ASUS Customer Service.

My name is Echo and it's my pleasure to help you with your problem.

I will pass your enquiry to our RD colleague for check, if there are any updated news, we will let you know as soon as possible. :)

Welcome to refer Troubleshooting & FAQ for ASUS products in ASUS website:
Troubleshooting - [url="http://support.asus.com/troubleshooting/troubleshooting.aspx?SLanguage=en-us"]http://support.asus.com/troubleshooting/tr...SLanguage=en-us[/url]
FAQ - [url="http://support.asus.com/faq/faq.aspx?SLanguage=en-us"]http://support.asus.com/faq/faq.aspx?SLanguage=en-us[/url]

If you continue to experience issues in the future, please do not hesitate to contact us.

Best Regards,

Echo_Zhang

ASUS Customer Service

If you have any suggestions or feedback about our technical support service, please e-mail to Manager_TMSS@asus.com. We will then arrange for a specialist to work with you regarding your issue. Your suggestions and feedback are appreciated and allow us to provide better service.

---------- Original Message ----------
From :
Sent : 2009/10/26 ?? 02:45:22
To : "tsd@asus.com.tw"
Subject : Re:Re:<TSD> Graphic Card EN8400 Series [ID=RWTM20091025220512814-031]

[CASEID=WTM2009102615283751]

Dear Echo
Thanks for your interest in helping me.

I have been happily using dual view in WIndows XP Professional since I bought the
card. I have occasionally updated the NVIDIA display drivers.

The problem first arose on 22 October when I updated my graphics driver past the
working version of 182.50 to the latest 191.07. I lost my dual screen display, though
the control panel seemed to think that I still had it. I then tried every NVIDIA driver
subsequent to that and have had to go back to 182.50 to get back my dual screen. In
addition to losing the second screen, the control panel on any driver after 182.50 tells
me that my first screen (on the D-sub) is "2" and my second screen (on the DVI) is "1".
But my physical second screen shows "no input".

There are clearly no connection or physical problems, as the dual view works perfectly
with driver 182.50. However, I have done as you asked and unplugged and rubbed the
gold connections and reseated the card. It has not helped.

I am using the latest ASUS sourced BIOS on my P5K-E Wi-Fi motherboard.

I'm afraid I do not have another PC to try it on, but why should that be necessary as the
card works correctly with dual view on driver 182.50?

On 23rd October I got my copy of windows 7 professional, and installed that on an
additional hard drive so that I can dual boot into either WXP or W7. None of the drivers
from your web site or from NVIDIA will give me a dual screen view, though as I
mention, the control panel shows it is enabled.

I hope that this gives you enough information to help me further.

Jim


---------- Original Message ----------
From:ASUS TSD
To:
Date:2009-10-25 12:31:16

Dear jim,
Thank you for contacting ASUS.

This is Echo and I will be assisting you with the issue you have posted.

Firstly, would you please tell us when and after what action this problem occurred?
Did the problem exists when you first using this card?
Please check if both ports have any hardware issue.
Secondly, please take out your graphic card, try to clean its golden connectors with a
rubber, check if there is any hardware issue, and then reseat it back tightly.
Thirdly, please check if there is any updated BIOS or driver for your other PC
components.
Otherwise please change this card to another PC to test.

Sorry for any inconvenience brings to you.
Thanks a lot for your kindly understanding and support!

I look forward for your response with all the details to assist you.

Yours sincerely,

Echo_Zhang
(Fruitful 2009)
ASUS Customer Service Center



---------- Original Message ----------
From :
Sent : 2009-10-25 4:00:28
To : "tsd@asus.com.tw"
Subject : <TSD> Graphic Card EN8400 Series



[CASEID=WTM20091025220512814]



Apply date : 10/25/2009 2:20:51 AM

[Contact Information]
*Name : jim
*Email Address :
Phone Number : 0
City : durham
*Country : United Kingdom

[Product Information]
*Product Type : Graphic Card
*Product Model : EN8400 Series
*Product S/N : 7AC0AI617787
Place of Purchase : DABS.COM
*Date of Purchase : 2008/3/16

[Motherboard Specification]
*Motherboard Vendor : ASUS
*Motherboard Revision : P5K-E wi-fi v1.xx
*Motherboard BIOS Revision : 1305

[CPU Specification]
*CPU Vendor : Intel
*CPU Type : Socket 775 core duo E8200
*CPU Speed : 2.66GHz

[Memory Specification]
*Memory Vendor : various
*Memory Model : DDR2
*Memory Capacity : 6GB

[HDD Specification]
HDD Vendor :
HDD Model :
HDD Capacity :

[Add-on Card Specificatio]
Add-on Card Vendor :
Add-on Card Type :
Add-on Card Model :

*Operating System : WinXP

[Problem Description]
My video card will no longer display on the second screen.
It works with NVIDIA driver 182.50, but nothing subsequent. It does not work with the
latest downloaded driver from the ASUS site.
Thisis sadly not getting anywhere. This is what I had from ASUS tech support a fortnight ago (the card is an ASUS branded NVIDIA). I have also posted on their forums and approached NVIDIA but not heard anything. I'll remind each of them.



Dear Jim,



Thank you for contacting ASUS Customer Service.



My name is Echo and it's my pleasure to help you with your problem.



I will pass your enquiry to our RD colleague for check, if there are any updated news, we will let you know as soon as possible. :)



Welcome to refer Troubleshooting & FAQ for ASUS products in ASUS website:

Troubleshooting - http://support.asus.com/troubleshooting/tr...SLanguage=en-us

FAQ - http://support.asus.com/faq/faq.aspx?SLanguage=en-us



If you continue to experience issues in the future, please do not hesitate to contact us.



Best Regards,



Echo_Zhang



ASUS Customer Service



If you have any suggestions or feedback about our technical support service, please e-mail to Manager_TMSS@asus.com. We will then arrange for a specialist to work with you regarding your issue. Your suggestions and feedback are appreciated and allow us to provide better service.



---------- Original Message ----------

From :

Sent : 2009/10/26 ?? 02:45:22

To : "tsd@asus.com.tw"

Subject : Re:Re:<TSD> Graphic Card EN8400 Series [ID=RWTM20091025220512814-031]



[CASEID=WTM2009102615283751]



Dear Echo

Thanks for your interest in helping me.



I have been happily using dual view in WIndows XP Professional since I bought the

card. I have occasionally updated the NVIDIA display drivers.



The problem first arose on 22 October when I updated my graphics driver past the

working version of 182.50 to the latest 191.07. I lost my dual screen display, though

the control panel seemed to think that I still had it. I then tried every NVIDIA driver

subsequent to that and have had to go back to 182.50 to get back my dual screen. In

addition to losing the second screen, the control panel on any driver after 182.50 tells

me that my first screen (on the D-sub) is "2" and my second screen (on the DVI) is "1".

But my physical second screen shows "no input".



There are clearly no connection or physical problems, as the dual view works perfectly

with driver 182.50. However, I have done as you asked and unplugged and rubbed the

gold connections and reseated the card. It has not helped.



I am using the latest ASUS sourced BIOS on my P5K-E Wi-Fi motherboard.



I'm afraid I do not have another PC to try it on, but why should that be necessary as the

card works correctly with dual view on driver 182.50?



On 23rd October I got my copy of windows 7 professional, and installed that on an

additional hard drive so that I can dual boot into either WXP or W7. None of the drivers

from your web site or from NVIDIA will give me a dual screen view, though as I

mention, the control panel shows it is enabled.



I hope that this gives you enough information to help me further.



Jim





---------- Original Message ----------

From:ASUS TSD

To:

Date:2009-10-25 12:31:16



Dear jim,

Thank you for contacting ASUS.



This is Echo and I will be assisting you with the issue you have posted.



Firstly, would you please tell us when and after what action this problem occurred?

Did the problem exists when you first using this card?

Please check if both ports have any hardware issue.

Secondly, please take out your graphic card, try to clean its golden connectors with a

rubber, check if there is any hardware issue, and then reseat it back tightly.

Thirdly, please check if there is any updated BIOS or driver for your other PC

components.

Otherwise please change this card to another PC to test.



Sorry for any inconvenience brings to you.

Thanks a lot for your kindly understanding and support!



I look forward for your response with all the details to assist you.



Yours sincerely,



Echo_Zhang

(Fruitful 2009)

ASUS Customer Service Center







---------- Original Message ----------

From :

Sent : 2009-10-25 4:00:28

To : "tsd@asus.com.tw"

Subject : <TSD> Graphic Card EN8400 Series







[CASEID=WTM20091025220512814]







Apply date : 10/25/2009 2:20:51 AM



[Contact Information]

*Name : jim

*Email Address :

Phone Number : 0

City : durham

*Country : United Kingdom



[Product Information]

*Product Type : Graphic Card

*Product Model : EN8400 Series

*Product S/N : 7AC0AI617787

Place of Purchase : DABS.COM

*Date of Purchase : 2008/3/16



[Motherboard Specification]

*Motherboard Vendor : ASUS

*Motherboard Revision : P5K-E wi-fi v1.xx

*Motherboard BIOS Revision : 1305



[CPU Specification]

*CPU Vendor : Intel

*CPU Type : Socket 775 core duo E8200

*CPU Speed : 2.66GHz



[Memory Specification]

*Memory Vendor : various

*Memory Model : DDR2

*Memory Capacity : 6GB



[HDD Specification]

HDD Vendor :

HDD Model :

HDD Capacity :



[Add-on Card Specificatio]

Add-on Card Vendor :

Add-on Card Type :

Add-on Card Model :



*Operating System : WinXP



[Problem Description]

My video card will no longer display on the second screen.

It works with NVIDIA driver 182.50, but nothing subsequent. It does not work with the

latest downloaded driver from the ASUS site.

To make mistakes is human, but to really mess it up requires a computer.

#6
Posted 11/11/2009 09:15 AM   
[quote name='Fellwalker' post='603914' date='Oct 22 2009, 06:30 AM']So it appears I can have an XP PC with two screens, or a W7 PC with one screen.[/quote]
On W7, can you only output on the VGA port? I think I am having the [url="http://forums.nvidia.com/index.php?showtopic=150326"]same problem[/url].
[quote name='Fellwalker' post='603914' date='Oct 22 2009, 06:30 AM']So it appears I can have an XP PC with two screens, or a W7 PC with one screen.

On W7, can you only output on the VGA port? I think I am having the same problem.

#7
Posted 11/11/2009 07:16 PM   
[quote name='John Galt' post='949415' date='Nov 11 2009, 07:16 PM']On W7, can you only output on the VGA port? I think I am having the [url="http://forums.nvidia.com/index.php?showtopic=150326"]same problem[/url].[/quote]

Yes I agree, it sounds like the same problem. The visible screen is on the VGA output. Whilst the system sees the other monitor (on the DVI output) and shows it as working properly, it does not display anything. I have tried disabling Aero as well, to no avail.
I don't have a DVI screen to try and see whether that would work.
[attachment=14655:NVIDIA.jpg][attachment=14656:Device_Manage
r.jpg][attachment=14657:System_Information.pdf]
[attachment=14658:Device_M...nnection.jpg][attachment=14659:
Device_M...ection_2.jpg][attachment=14660:8400_GS_Properties.
jpg]
[quote name='John Galt' post='949415' date='Nov 11 2009, 07:16 PM']On W7, can you only output on the VGA port? I think I am having the same problem.



Yes I agree, it sounds like the same problem. The visible screen is on the VGA output. Whilst the system sees the other monitor (on the DVI output) and shows it as working properly, it does not display anything. I have tried disabling Aero as well, to no avail.

I don't have a DVI screen to try and see whether that would work.

[attachment=14655:NVIDIA.jpg][attachment=14656:Device_Manage

r.jpg][attachment=14657:System_Information.pdf]

[attachment=14658:Device_M...nnection.jpg][attachment=14659:

Device_M...ection_2.jpg][attachment=14660:8400_GS_Properties.

jpg]

To make mistakes is human, but to really mess it up requires a computer.

#8
Posted 11/11/2009 08:08 PM   
Does anyone have working dual screens in Windows 7, or in XP with a driver after 182.50?
Does anyone have working dual screens in Windows 7, or in XP with a driver after 182.50?

To make mistakes is human, but to really mess it up requires a computer.

#9
Posted 11/16/2009 10:45 AM   
In desperation, I have tried the 64 bit Vista driver for 182.50 and it works. Installed happily with no warnings. Dual screen. Wonderful. Pathetic that NVIDIA had it working and then lost it, and could not be bothered to either acknowledge the issue or even reply to my report.
In desperation, I have tried the 64 bit Vista driver for 182.50 and it works. Installed happily with no warnings. Dual screen. Wonderful. Pathetic that NVIDIA had it working and then lost it, and could not be bothered to either acknowledge the issue or even reply to my report.

To make mistakes is human, but to really mess it up requires a computer.

#10
Posted 11/19/2009 05:20 PM   
Thank you all for your comments. We are looking into this issue. Can you please list the monitor make and models which are being used, the type of connection use with these monitors (VGA, DVI, HDMI, HDMI to DVI)? Also, let us know the behavior if you swap the arrangement of the cables coming from the back of the graphics card.
Thank you all for your comments. We are looking into this issue. Can you please list the monitor make and models which are being used, the type of connection use with these monitors (VGA, DVI, HDMI, HDMI to DVI)? Also, let us know the behavior if you swap the arrangement of the cables coming from the back of the graphics card.

Please send me a PM if I fail to keep up on replying in any specific thread or leave a driver feedback: Driver Feedback

#11
Posted 11/20/2009 10:39 PM   
[quote name='Fellwalker' post='951514' date='Nov 16 2009, 04:45 AM']Does anyone have working dual screens in Windows 7, or in XP with a driver after 182.50?[/quote]


I am using version 195.62 in Windows 7, 32 Bit. I am using dual view (1 DVI, 1 VGA on a 8400GS) and it works okay as long as I don't shut down my computer. When I do shut down the computer I cannot go to the Nvidia control panel and activate the dual view I have to go to Windows display settings and activate it from there. It works great if I put it in sleep mode or when it goes to screen saver and back but, as I said shut down or restart and I have to go back to Windows Display Settings and reactivate each time. /yucky.gif' class='bbc_emoticon' alt=':yucky:' />

Sorry for posting here, just saw it was 64 bit forum.
[quote name='Fellwalker' post='951514' date='Nov 16 2009, 04:45 AM']Does anyone have working dual screens in Windows 7, or in XP with a driver after 182.50?





I am using version 195.62 in Windows 7, 32 Bit. I am using dual view (1 DVI, 1 VGA on a 8400GS) and it works okay as long as I don't shut down my computer. When I do shut down the computer I cannot go to the Nvidia control panel and activate the dual view I have to go to Windows display settings and activate it from there. It works great if I put it in sleep mode or when it goes to screen saver and back but, as I said shut down or restart and I have to go back to Windows Display Settings and reactivate each time. /yucky.gif' class='bbc_emoticon' alt=':yucky:' />



Sorry for posting here, just saw it was 64 bit forum.

#12
Posted 12/02/2009 04:54 AM   
[quote name='ManuelG' post='953702' date='Nov 20 2009, 04:39 PM']Thank you all for your comments. We are looking into this issue. Can you please list the monitor make and models which are being used, the type of connection use with these monitors (VGA, DVI, HDMI, HDMI to DVI)? Also, let us know the behavior if you swap the arrangement of the cables coming from the back of the graphics card.[/quote]

I have exactly the same issue now after a recent MS update to my 64-bit Vista. After the update, my 8400GS will no longer activate the second display.

I have 2 HP 24" wide panels on a 16x 9800GT and 2 HP 17" standard LCDs on the 8400GS on an HP d5100t system. For the past year, this configuration has worked pefectly using older 175 version drivers (175.16? possibly). After the recent MS update (and like a dumb-a I clicked on the optional nVidia Display drivers) neither video card would support dual displays.

I installed version 195.62, no luck. The 9800GT activated the two flat panels, the 8600GS only see one.
I backreved to 186.18, 185.85, 182.50, 181.22, none worked.
I did a system restore to before the MS Updates and was bacvk on 175.xx (can't recall the exact version), still the 8600GS would not work.
I have been unable to locate the 175.xx version of Vista drivers and can only find the XP 64-bit version (have not tried this yet).

Interesting that Windows>Personalize>Display Settings 'sees' the second monitor on the 8400GS but WILL NOT activate it. Nvidia control doesn't even see it.

Yes, I have swapped the cables from the 8400 and the single activated monitor flips to the other cable. I have replaced the cables, same result. This is definitely a driver issue not a hardware problem.

Any recommendations on how to get this back working again?
[quote name='ManuelG' post='953702' date='Nov 20 2009, 04:39 PM']Thank you all for your comments. We are looking into this issue. Can you please list the monitor make and models which are being used, the type of connection use with these monitors (VGA, DVI, HDMI, HDMI to DVI)? Also, let us know the behavior if you swap the arrangement of the cables coming from the back of the graphics card.



I have exactly the same issue now after a recent MS update to my 64-bit Vista. After the update, my 8400GS will no longer activate the second display.



I have 2 HP 24" wide panels on a 16x 9800GT and 2 HP 17" standard LCDs on the 8400GS on an HP d5100t system. For the past year, this configuration has worked pefectly using older 175 version drivers (175.16? possibly). After the recent MS update (and like a dumb-a I clicked on the optional nVidia Display drivers) neither video card would support dual displays.



I installed version 195.62, no luck. The 9800GT activated the two flat panels, the 8600GS only see one.

I backreved to 186.18, 185.85, 182.50, 181.22, none worked.

I did a system restore to before the MS Updates and was bacvk on 175.xx (can't recall the exact version), still the 8600GS would not work.

I have been unable to locate the 175.xx version of Vista drivers and can only find the XP 64-bit version (have not tried this yet).



Interesting that Windows>Personalize>Display Settings 'sees' the second monitor on the 8400GS but WILL NOT activate it. Nvidia control doesn't even see it.



Yes, I have swapped the cables from the 8400 and the single activated monitor flips to the other cable. I have replaced the cables, same result. This is definitely a driver issue not a hardware problem.



Any recommendations on how to get this back working again?

#13
Posted 12/02/2009 06:58 PM   
I have WIN 7 (32bit) and a SONY HDTV on DVI (with DVI to HDMI Adapter) and a VGA Screen with driver 195.62. Works fine.
BUT when I put the HDTV on HDMI output it gose black. No output on HDMI at all.
I have WIN 7 (32bit) and a SONY HDTV on DVI (with DVI to HDMI Adapter) and a VGA Screen with driver 195.62. Works fine.

BUT when I put the HDTV on HDMI output it gose black. No output on HDMI at all.

#14
Posted 12/03/2009 09:04 AM   
[quote name='ManuelG' post='953702' date='Nov 20 2009, 02:39 PM']Thank you all for your comments. We are looking into this issue. Can you please list the monitor make and models which are being used, the type of connection use with these monitors (VGA, DVI, HDMI, HDMI to DVI)? Also, let us know the behavior if you swap the arrangement of the cables coming from the back of the graphics card.[/quote]
I have a system running Windows 7 Pro 64 bit on an Abit KN8 SLI (nForce4 SLI) motherboard with 4GB RAM and have an EVGA Geforce 7600GS video card (no overclock). I am running the 195.55 video drivers, but have tried a few other versions.

This system was working perfectly on Vista Ultimate 32 bit. I was able to use the DVI out to drive my ViewSonic VP920b monitor. I have both the VGA and DVI cables plugged into the monitor, but leave it set on DVI.

With Windows 7, I can only get the VGA port to work. Every time I try to enable DVI and switch over to it on the monitor, I just get a black/no signal screen.

I've tried booting up with just the DVI cable connected.

I've tried using the windows "Screen Resolution" screen from the control panel to switch from VGA to DVI.

I've tried using the Nvidia control panel to switch from VGA to DVI.

I've tried making the DVI the primary screen with VGA as secondary.

I've tried making the DVI and clone of the VGA display.

I always get the same result with DVI display showing black/no signal.
[quote name='ManuelG' post='953702' date='Nov 20 2009, 02:39 PM']Thank you all for your comments. We are looking into this issue. Can you please list the monitor make and models which are being used, the type of connection use with these monitors (VGA, DVI, HDMI, HDMI to DVI)? Also, let us know the behavior if you swap the arrangement of the cables coming from the back of the graphics card.

I have a system running Windows 7 Pro 64 bit on an Abit KN8 SLI (nForce4 SLI) motherboard with 4GB RAM and have an EVGA Geforce 7600GS video card (no overclock). I am running the 195.55 video drivers, but have tried a few other versions.



This system was working perfectly on Vista Ultimate 32 bit. I was able to use the DVI out to drive my ViewSonic VP920b monitor. I have both the VGA and DVI cables plugged into the monitor, but leave it set on DVI.



With Windows 7, I can only get the VGA port to work. Every time I try to enable DVI and switch over to it on the monitor, I just get a black/no signal screen.



I've tried booting up with just the DVI cable connected.



I've tried using the windows "Screen Resolution" screen from the control panel to switch from VGA to DVI.



I've tried using the Nvidia control panel to switch from VGA to DVI.



I've tried making the DVI the primary screen with VGA as secondary.



I've tried making the DVI and clone of the VGA display.



I always get the same result with DVI display showing black/no signal.

#15
Posted 12/03/2009 05:12 PM   
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