nvidia 8400m gt windows 7 driver

Hi,
I have a Sony AR61m, I have been trying to sort this problem with the 8400m GT x64 issue out today, got some good points on this page but it didnt work for me until I did the following:

Downloaded this driver:

Vistax64 beta for the 8400m GTnce downloaded Do not run the setup, Instead use device manager to update the driver.. but first

NVIDIA DRIVERS 179.28 BETA

Then:
Find the ID of the video card. Go to device manager, select video adapters, select properties of your video card, go to details. Where its the device description change to HardwareID. U will see a code in this format:
PCI\VEN_10DE&DEV_0426&SUBSYS_9005104D&REV_A1 keep the part in red of the code saved on a text document.

Now go to the extracted downloaded package should be "C:\NVIDIA\WinVista64\179.28\IS\Display"
and edit the NVAM.inf file

go to the end of the txt file and choose the closest match and note the DEV_0428.3 number.. "append the description to say "Sony Vaio" for your info
then go to the [Manufacturer]
%NVIDIA% = NVIDIA.Mfg,NTamd64.6.0 section and edit the DEV_0428.3 number.. to show the following
%NVIDIA_G86.DEV_0428.3% = nv_G86_0, PCI\VEN_10DE&DEV_0426&SUBSYS_9005104D

save and use device manager to update the driverer
Worked for me, hope this helps...

Dic

Dicerelli,

Thanks for posting this info!

Although I'm an experienced System Engineer I've never played around with modifying VGA drivers. Your fix worked like a charm and was easy to follow!

Thanks again!

Haku

nokstar said:

ww3 said:

I have the same problem with this video card before, what u need to do is download the driver on nvidia, i think the version is 195.62, and make these changes, if ur windows are 64-bits:

1- Exctract the driber instalation in one folder, but dont execute. Go to the folder extracted, in my case was H:\Driver\NVIDIA\DisplayDriver\195.62\WinVista_Win7_64.
2- Find the ID of the video card. Enter in device manager, go on video adapters, select properties of ur video card, go in details. Where is device description change in ID Hardware. U will see a code in this format:
PCI\VEN_10DE&DEV_0426&SUBSYS_9005104D&REV_A1 keep the part in red of the code saved on a text document.
3- Open ListDevices.txt search for ur video card, u will see that this driver is for ur video card, but u have to do some changes. Below the name of the video card add ur video card.My ListDevices is like this:

NVMT.INF:
DEV_0405&SUBSYS_82271071 "NVIDIA GeForce 9500M GS"
DEV_0405&SUBSYS_82301071 "NVIDIA GeForce 9500M GS"
DEV_0407&SUBSYS_02841A92 "NVIDIA GeForce 8600M GT"
DEV_0425&SUBSYS_82271071 "NVIDIA GeForce 8600M GS"
DEV_0425&SUBSYS_82531071 "NVIDIA GeForce 8600M GS"
DEV_0426&SUBSYS_55841991 "NVIDIA GeForce 8400M GT"
DEV_0426&SUBSYS_9005104D "NVIDIA GeForce 8400M GT"

The red is my video card code.

4- Now see the NVMT.INF in green, u will open the document text with this name and change some things.
5- In this document search for [NVIDIA_SetA_Devices.NTamd64.6.1] and for [NVIDIA_SetA_Devices.NTamd64.6.1] there u will add below the DEV.0426 ur video card ID, the Section 11 and section 12 in my video card, i dont now how u find, i search on internet and the guy just put section 11 in one part e section 12 on another.
[NVIDIA_SetA_Devices.NTamd64.6.0]
%NVIDIA_DEV.0405.01% = Section001, PCI\VEN_10DE&DEV_0405&SUBSYS_82271071
%NVIDIA_DEV.0405.02% = Section001, PCI\VEN_10DE&DEV_0405&SUBSYS_82301071
%NVIDIA_DEV.0407.01% = Section001, PCI\VEN_10DE&DEV_0407&SUBSYS_02841A92
%NVIDIA_DEV.0425.01% = Section003, PCI\VEN_10DE&DEV_0425&SUBSYS_82271071
%NVIDIA_DEV.0425.02% = Section003, PCI\VEN_10DE&DEV_0425&SUBSYS_82531071
%NVIDIA_DEV.0426.01% = Section005, PCI\VEN_10DE&DEV_0426&SUBSYS_55841991
%NVIDIA_DEV.0426.02% = Section007, PCI\VEN_10DE&DEV_0426&SUBSYS_88971033
%NVIDIA_DEV.0426.03% = Section011, PCI\VEN_10DE&DEV_0426&SUBSYS_9005104D

[NVIDIA_SetA_Devices.NTamd64.6.1]
%NVIDIA_DEV.0405.01% = Section002, PCI\VEN_10DE&DEV_0405&SUBSYS_82271071
%NVIDIA_DEV.0405.02% = Section002, PCI\VEN_10DE&DEV_0405&SUBSYS_82301071
%NVIDIA_DEV.0407.01% = Section002, PCI\VEN_10DE&DEV_0407&SUBSYS_02841A92
%NVIDIA_DEV.0425.01% = Section004, PCI\VEN_10DE&DEV_0425&SUBSYS_82271071
%NVIDIA_DEV.0425.02% = Section004, PCI\VEN_10DE&DEV_0425&SUBSYS_82531071
%NVIDIA_DEV.0426.01% = Section006, PCI\VEN_10DE&DEV_0426&SUBSYS_55841991
%NVIDIA_DEV.0426.02% = Section008, PCI\VEN_10DE&DEV_0426&SUBSYS_88971033
%NVIDIA_DEV.0426.03% = Section012, PCI\VEN_10DE&DEV_0426&SUBSYS_9005104D

6- To finish in the same archive search for Strings , in the end of the document, is where u chose the name who will apear when the driver is installed, my is like this:
[Strings]
DiskID1 = "NVIDIA Windows Vista / Windows 7 (64 bit) Driver Library Installation Disk 1"
NVIDIA = "NVIDIA"
NVIDIA_A = "NVIDIA"
NVIDIA_DEV.0405.01 = "NVIDIA GeForce 9500M GS"
NVIDIA_DEV.0405.02 = "NVIDIA GeForce 9500M GS "
NVIDIA_DEV.0407.01 = "NVIDIA GeForce 8600M GT"
NVIDIA_DEV.0425.01 = "NVIDIA GeForce 8600M GS"
NVIDIA_DEV.0425.02 = "NVIDIA GeForce 8600M GS "
NVIDIA_DEV.0426.01 = "NVIDIA GeForce 8400M GT"
NVIDIA_DEV.0426.02 = "NVIDIA GeForce 8400M GT "
NVIDIA_DEV.0426.03 = "NVIDIA GeForce 8400M GT (Sony VAIO)"
NVIDIA_DEV.0427.01 = "NVIDIA GeForce 8400M GS"

All the changes i made are in red, i hope this help u. Sorry for the english i ma from brasil and i I do not write well yet:)

If anyone knows please explain why the section 12 and section 11.

I have tried everything you said, I have been researching this issue for months and have NEVER had it work. I have a Sony Vaio AR550, with what a Nvidia GeForce 8400M running Windows 7 64. I have gone to laptopvideo2go.com tried drivers, modded INF files, I even tried you recommended advice with getting down into the actual driver structure. I have read several threads, and tried them all with no success. If anyone could help me or point me in the right direction, I'm probably going to have to resort back to Vista just to have a working Video Card.

i have the exact same problem. if you ever find the solution, please let me know..

Hi
I has download the latest drivers for card GF8400m GT and do with it step by step what was written in "Quote: Originally Posted by ww3" and it works.

Now I have sony Vaio VGN-FZ290 with Windows 7 64 on board with working GF8400m G

!!! thanks for all !!!

I know this thread is old, but I just wanted to get this in here for search index's sake.

Following these directions, I was able to install the graphics/video card driver on Windows 7 Ultimate x64 for the NVIDIA GeForce 8400M GT on a Sony All-in-One model number VGC-LT29U.