Solved Nvidia GeForce 8400M GT not found after Windows 7 64bit install

Right-click the link for the INF file and choose "Save Link As" and save it somewhere. After that, rename it and remove ".txt" so that all that's left is "NVDM.INF".


When I saved the link it i called it NVDM and saved it to desktop, when i looked, it saved as NVDM.INF already with no .txt


Two Cables, I have to leave now to pick up my mum from work, will be back in an hour or so. Thank you for your help so far, I will be back on here as soon as I am back so if you find any more info or ideas then plz post them.

Regards.
 

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Windows 7 Home Premium 64 bitIntel Core 2 Duo T7250 (2.00GHz)2GBNvidia GeForce 8400M GT
Computer type
Laptop
Computer Manufacturer/Model Number
Sony Vaio VGN-AR51E
OS
Windows 7 Home Premium 64 bit
CPU
Intel Core 2 Duo T7250 (2.00GHz)
Motherboard
Factory Standard
Memory
2GB
Graphics Card(s)
Nvidia GeForce 8400M GT
Sound Card
Factory Standard
Hard Drives
200GB
Browser
Mozilla Firefox
So can I copy what comes up when i click download modded INF and paste it into the file NVDM that would appear in the 301.40 extracted folder like before and do the same for the display.driver nvdm file.

No because that's the .INF for 307.22.

So do this:

  1. Go here: LaptopVideo2Go: Drivers
  2. Download the driver and extract it somewhere (it doesn't matter where)
  3. Right-click the INF link and choose Save Link As
  4. Save it somewhere, it doesn't matter where as long as you know where it is
  5. Rename it and delete ".txt" off the end so all that's left is "NVDM.INF". Say "Yes" to the prompt Windows will give you asking if you're sure about this.
  6. Copy this folder to both of those folders I mentioned before
  7. Run setup.exe
Alternatively to step #2, you can just left-click the INF link, press Ctrl+A for "Select All", then you can copy this text. After that, you can open the NVDM.INF file in the first folder (out of the 2 I mentioned) and press Ctrl+A for Select All and then you can paste what you had copied. After this, you'd go into the other folder (the Display.Driver folder) and do the same thing: open the NVDM.INF file, do Select All and then paste. So, do whichever way seems easier to you.
 

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Right-click the link for the INF file and choose "Save Link As" and save it somewhere. After that, rename it and remove ".txt" so that all that's left is "NVDM.INF".


When I saved the link it i called it NVDM and saved it to desktop, when i looked, it saved as NVDM.INF already with no .txt


Two Cables, I have to leave now to pick up my mum from work, will be back in an hour or so. Thank you for your help so far, I will be back on here as soon as I am back so if you find any more info or ideas then plz post them.

Regards.

Oh, you need to change a Windows setting:

  1. Open the Start Menu
  2. Type folder options and press Enter
  3. Switch to the "View" tab
  4. Don't scroll. Instead, look at the bottom of what you can see already for "Hide extensions for known file types". Disable this (remove the check mark).
  5. Click OK
You should see the ".txt" extension now and this will enable you to remove it. :)
 

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Right I think we are getting somewhere. I did the folder options thing and the unstable message thing came up etc etc and followed your instructions.

I did all the instructions with a fresh download of driver 301.40 and extracted it. I then copied the relevant saved link INF thing to the Display.Driver folder and overwrite the original NVDM.INF file. I ran setup before i did this and no INF file appeared in the base folder, so i copied the modded INF file into the base folder and re ran the setup.

This time an error message came up sayuing required files missing or something. So Im going to get rid of 301.40 and try a more recent driver and do the steps again - hopefully a INF file appears with a newer driver.

The most recent driver with the modded INF available which is WHQL certified is 302.77 so will try with that driver.

Will post results ASAP

Quick question, does it matter if i install a recent or old driver? would it auto update anyway once its fully detected again etc?. I only need the driver to be able to install directx9
 

My Computer My Computer

At a glance

Windows 7 Home Premium 64 bitIntel Core 2 Duo T7250 (2.00GHz)2GBNvidia GeForce 8400M GT
Computer type
Laptop
Computer Manufacturer/Model Number
Sony Vaio VGN-AR51E
OS
Windows 7 Home Premium 64 bit
CPU
Intel Core 2 Duo T7250 (2.00GHz)
Motherboard
Factory Standard
Memory
2GB
Graphics Card(s)
Nvidia GeForce 8400M GT
Sound Card
Factory Standard
Hard Drives
200GB
Browser
Mozilla Firefox
The driver and INF file have to match. So, do this:


  1. Go here for 302.77: LaptopVideo2Go: Drivers
  2. Download the driver and extract it somewhere (it doesn't matter where)
  3. Right-click the INF link on that page for 302.77 and choose Save Link As
  4. Save it somewhere, it doesn't matter where as long as you know where it is
  5. Rename it and delete ".txt" off the end so all that's left is "NVDM.INF". Say "Yes" to the prompt Windows will give you asking if you're sure about this.
  6. Copy this folder to both of those folders I mentioned before
  7. Run setup.exe
It doesn't have to be 302.77. It can be any version just as long as you use the INF file that goes with the driver version you download from LaptopVideo2Go.
 

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Success!

I downloaded and extracted 302.77 and the download self-extracted to my downloads folder.

I followed all the steps as you have put so concisely above and then ran the setup, it installed everything I needed and now device manager shows my graphics card as it should and has replaced the VGA adapter as was shown before.

Thank you SO SO much for your help Two Cables, I know it took a while but we got there, and now the solution should only take around 5 minutes for any other people in the same predicament.
 

My Computer My Computer

At a glance

Windows 7 Home Premium 64 bitIntel Core 2 Duo T7250 (2.00GHz)2GBNvidia GeForce 8400M GT
Computer type
Laptop
Computer Manufacturer/Model Number
Sony Vaio VGN-AR51E
OS
Windows 7 Home Premium 64 bit
CPU
Intel Core 2 Duo T7250 (2.00GHz)
Motherboard
Factory Standard
Memory
2GB
Graphics Card(s)
Nvidia GeForce 8400M GT
Sound Card
Factory Standard
Hard Drives
200GB
Browser
Mozilla Firefox
Success!

I downloaded and extracted 302.77 and the download self-extracted to my downloads folder.

I followed all the steps as you have put so concisely above and then ran the setup, it installed everything I needed and now device manager shows my graphics card as it should and has replaced the VGA adapter as was shown before.

Thank you SO SO much for your help Two Cables, I know it took a while but we got there, and now the solution should only take around 5 minutes for any other people in the same predicament.

Oh dude, I just felt a few goosebumps. :) You're very welcome.

I knew we could do it. I think the problem initially was a little bit of miscommunication on my part, so I had to kind of work my way through that to clear it all up. hehe So, I apologize for that, but man: this is a good feeling!
 

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I had the same feeling when it started installing, but didnt want to jinx it so waited til after the reboot to post haha.

once the driver is extracted it literally just takes the modded INF files to be put in the specific folders then it sorts itself out somehow.

I think without that website, it would have been ALOT more lengthy lol.
 

My Computer My Computer

At a glance

Windows 7 Home Premium 64 bitIntel Core 2 Duo T7250 (2.00GHz)2GBNvidia GeForce 8400M GT
Computer type
Laptop
Computer Manufacturer/Model Number
Sony Vaio VGN-AR51E
OS
Windows 7 Home Premium 64 bit
CPU
Intel Core 2 Duo T7250 (2.00GHz)
Motherboard
Factory Standard
Memory
2GB
Graphics Card(s)
Nvidia GeForce 8400M GT
Sound Card
Factory Standard
Hard Drives
200GB
Browser
Mozilla Firefox
I had the same feeling when it started installing, but didnt want to jinx it so waited til after the reboot to post haha.

once the driver is extracted it literally just takes the modded INF files to be put in the specific folders then it sorts itself out somehow.

I think without that website, it would have been ALOT more lengthy lol.

The reason it works is the INF files contain your GPU's identifiers and the installer searches the INF for those identifiers (it checks what you have and then it looks in the INF for it). So if it's there, then it goes "His GPU is in the INF file, so it's compatible. Therefore, I'll go ahead and allow the installation to continue". Otherwise, it goes "Hey wait. It's not in the INF file. That means he doesn't have compatible hardware. Therefore, I can't allow the installation to continue."

So you see, the modified INF file lists your GPU (among all of the other compatible GPUs as well) and the unmodified INF file doesn't. I think it's due to some type of special proprietary Sony GPU that NVIDIA made especially for them or something. Or maybe Sony changed the way it's identified so that only Sony's drivers work. I don't know.

:)
 

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Ahh i see. All that makes sense now in the whole scheme of it all.

Thanks again for your help, I was going down all the wrong avenues before I came on here. Take Care.
 

My Computer My Computer

At a glance

Windows 7 Home Premium 64 bitIntel Core 2 Duo T7250 (2.00GHz)2GBNvidia GeForce 8400M GT
Computer type
Laptop
Computer Manufacturer/Model Number
Sony Vaio VGN-AR51E
OS
Windows 7 Home Premium 64 bit
CPU
Intel Core 2 Duo T7250 (2.00GHz)
Motherboard
Factory Standard
Memory
2GB
Graphics Card(s)
Nvidia GeForce 8400M GT
Sound Card
Factory Standard
Hard Drives
200GB
Browser
Mozilla Firefox
I might have to start a new thread soon on how to install directx9 on windows 7 64bit when it already has directx11 preinstalled. Keep trying loads of different downloads, the microsoft ones say I have a newer version so wont update the missing files and the open source ones install the files but Rome Total War doesnt accept it. I think we have achieved enough for one day though!
 

My Computer My Computer

At a glance

Windows 7 Home Premium 64 bitIntel Core 2 Duo T7250 (2.00GHz)2GBNvidia GeForce 8400M GT
Computer type
Laptop
Computer Manufacturer/Model Number
Sony Vaio VGN-AR51E
OS
Windows 7 Home Premium 64 bit
CPU
Intel Core 2 Duo T7250 (2.00GHz)
Motherboard
Factory Standard
Memory
2GB
Graphics Card(s)
Nvidia GeForce 8400M GT
Sound Card
Factory Standard
Hard Drives
200GB
Browser
Mozilla Firefox
I might have to start a new thread soon on how to install directx9 on windows 7 64bit when it already has directx11 preinstalled. Keep trying loads of different downloads, the microsoft ones say I have a newer version so wont update the missing files and the open source ones install the files but Rome Total War doesnt accept it. I think we have achieved enough for one day though!

Oh wow, so some games won't play because DirectX9 isn't installed? I don't know if I had this problem or not, but I was playing DirectX9 games in Windows 7 just fine.

Interesting...
 

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My laptop is around 5/6 years old so i tend to only play the older games on it (pre2004) ish.

Now I know my graphics card wasnt detected etc and have fixed the problem, i am attempting a clean install of Rome TW and see if the DirectX9 that comes with the CD works.

From other forums etc, its a common problem for win7 users that playing Rome TW came up with an error saying directx9 wasnt detected. From what Ive read, its particularly down to files missing that relate to DirectX9.0c but various downloads dont seem to change anything although they show as installing the missing files etc.

And saying all that, device manager shows the Nvidia display adapter with a yellow triangle and the following in the properties:

Windows has stopped this device because it has reported problems. (Code 43)

tbh I cant be bothered tonight to fix it now lol its 9.10pm here so might just leave it, but does that message mean that the driver is detected but not actually in use? hence why attempted installations of directx9 have failed to change the Rome TW error?
 

My Computer My Computer

At a glance

Windows 7 Home Premium 64 bitIntel Core 2 Duo T7250 (2.00GHz)2GBNvidia GeForce 8400M GT
Computer type
Laptop
Computer Manufacturer/Model Number
Sony Vaio VGN-AR51E
OS
Windows 7 Home Premium 64 bit
CPU
Intel Core 2 Duo T7250 (2.00GHz)
Motherboard
Factory Standard
Memory
2GB
Graphics Card(s)
Nvidia GeForce 8400M GT
Sound Card
Factory Standard
Hard Drives
200GB
Browser
Mozilla Firefox
My laptop is around 5/6 years old so i tend to only play the older games on it (pre2004) ish.

Now I know my graphics card wasnt detected etc and have fixed the problem, i am attempting a clean install of Rome TW and see if the DirectX9 that comes with the CD works.

From other forums etc, its a common problem for win7 users that playing Rome TW came up with an error saying directx9 wasnt detected. From what Ive read, its particularly down to files missing that relate to DirectX9.0c but various downloads dont seem to change anything although they show as installing the missing files etc.

And saying all that, device manager shows the Nvidia display adapter with a yellow triangle and the following in the properties:

Windows has stopped this device because it has reported problems. (Code 43)

tbh I cant be bothered tonight to fix it now lol its 9.10pm here so might just leave it, but does that message mean that the driver is detected but not actually in use? hence why attempted installations of directx9 have failed to change the Rome TW error?

Oh wait, have you restarted the laptop since installing the driver? I have no idea if that's what's needed, so I'm just making a quick guess.
 

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Yh did all that then it still appeared.

Strangely, when it was all first installed etc no yellow triangle appeared. I will try restarting the comp for tomorrow and whether its there or not, it looks like I will have to scrap the ol' gal for a custom desktop tower Ive had my eye on for a while now lol.
 

My Computer My Computer

At a glance

Windows 7 Home Premium 64 bitIntel Core 2 Duo T7250 (2.00GHz)2GBNvidia GeForce 8400M GT
Computer type
Laptop
Computer Manufacturer/Model Number
Sony Vaio VGN-AR51E
OS
Windows 7 Home Premium 64 bit
CPU
Intel Core 2 Duo T7250 (2.00GHz)
Motherboard
Factory Standard
Memory
2GB
Graphics Card(s)
Nvidia GeForce 8400M GT
Sound Card
Factory Standard
Hard Drives
200GB
Browser
Mozilla Firefox
Yh did all that then it still appeared.

Strangely, when it was all first installed etc no yellow triangle appeared. I will try restarting the comp for tomorrow and whether its there or not, it looks like I will have to scrap the ol' gal for a custom desktop tower Ive had my eye on for a while now lol.

Have you ever wanted to build your own computer?
 

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hmm kind of, im 21 years of age and have a 32 year old bro who has built several computers himself with good success and enjoyment,

I would need supervision because im not that confident to just follow online vids for that degree of stuff, but I would think building one myself would help me fully understand the computer itself alot more, hardware-wise. Alot of my computer knowledge is software/theory based rather than actually pulling apart a comp and saying what is what and where it should go etc.

I have looked on websites in the UK that I can get a good custom built pc made etc for around £500 which could play modern games and last a few years, but I dont think building one would save me THAT much money to outweigh the warranties and effort etc. and being a 21 year old graduate, its all about the financial side at the moment haha.
 

My Computer My Computer

At a glance

Windows 7 Home Premium 64 bitIntel Core 2 Duo T7250 (2.00GHz)2GBNvidia GeForce 8400M GT
Computer type
Laptop
Computer Manufacturer/Model Number
Sony Vaio VGN-AR51E
OS
Windows 7 Home Premium 64 bit
CPU
Intel Core 2 Duo T7250 (2.00GHz)
Motherboard
Factory Standard
Memory
2GB
Graphics Card(s)
Nvidia GeForce 8400M GT
Sound Card
Factory Standard
Hard Drives
200GB
Browser
Mozilla Firefox
hmm kind of, im 21 years of age and have a 32 year old bro who has built several computers himself with good success and enjoyment,

I would need supervision because im not that confident to just follow online vids for that degree of stuff, but I would think building one myself would help me fully understand the computer itself alot more, hardware-wise. Alot of my computer knowledge is software/theory based rather than actually pulling apart a comp and saying what is what and where it should go etc.

I have looked on websites in the UK that I can get a good custom built pc made etc for around £500 which could play modern games and last a few years, but I dont think building one would save me THAT much money to outweigh the warranties and effort etc. and being a 21 year old graduate, its all about the financial side at the moment haha.

I don't want to influence your future too much, but I'd feel guilty if I didn't at least mention this. You see, you could build a superior PC for about the same price as the one you're looking at. Not only that, but it's far easier to upgrade a computer that you built instead of a pre-built because it's all aftermarket parts instead of having to maybe deal with proprietary connectors or parts. Plus, I think the best part is you get to hand-pick everything and you have no limits to what your choices are. You can go to any store you want, you can pick from any selection to put together the best bang-for-your-buck. A custom-building site will limit you to what they sell and too many of them stick you with a crappy PSU which is a very bad thing. So you get to make sure that each and every part is the best possible for your money.

Not only that, but I found myself actually taking care of my computer for the first time in my life because I'm the one who built it. The way I feel about my computer is the complete opposite of a pre-built. It's almost like a pre-built isn't really mine: someone else made it and I just happen to own it now. I sometimes like to compare it to the difference between adopting a child and having one of your own. There's a unique bond with your own because you created it with your own body vs. trying to bond with one that someone else made or put together for you. I think the bond was completed for me when I actually put all the parts together and pressed the power button. If it weren't for that, then I don't think I'd care about my computer as much. It would feel like another pre-built.

lol anyway, so if you become interested (I admit that it's a bit of physical labor - at least it was for me), then I personally recommend seeking help with the entire process at Overclock.net. You can ask here on SevenForums too, but I feel that the OCN community as a whole is better for seeking advice with this than almost any other. I mean, I've been there for over 4 years and that's just what I've noticed.

Of course, a good argument against building your own is it can consume more time than you can afford to spend.
 

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