V5-573G and installing GTX 850M drivers

I just bought a brand new Aspire V5-573G with an i5-4210 (HD4400) and a GTX 850M.

On Windows 7 64bit, I installed all drivers there are (Intel USB 3.0, Intel Chipset, Intel WLAN+Bluetooth, Intel GFX, Realtek Audio, Realtek LAN and Realtek Cardreader, and whatever i forgot to mention).

Overall, there are no other devices recognized with missing drivers except "3D Video Controller" in the device manager. When trying to install the mobile drivers (either 337.88 WHQL or 340.43), the installer aborts on "Checking system compatibility" with "This graphics driver could not find compatible graphics hardware.".

AIDA64 sees the 850M card just fine. Theres no BIOS option for optimus on/off or anything. I don't get it why it wont work.

I am already on the latest BIOS version (2.28) which should enable said feature... Can anyone help me out?

Accepted answers

David64

I just modded the drivers and they are now installing. I edited the nvami.inf and added these two lines in their respective sections:

[NVIDIA_SetA_Devices.NTamd64.6.1]
%NVIDIA_DEV.1391.22CB.1043% = Section308, PCI\VEN_10DE&DEV_1391&SUBSYS_079B1025

[String]
NVIDIA_DEV.1391.22CB.1043 = "NVIDIA GeForce GTX 850M - MODDED"

they just installed successfully! YAY Smiley Very Happy

for those who run in the same issue:
1. Discover the HW ID of you gfx card:
2. Open the device manager and go to the properties of your yet to be installed graphicscard (3D Video Controller)
3. go to the details tab and select Hardware IDs
4. Copy your HW ID. Mine is "PCI\VEN_10DE&DEV_1391&SUBSYS_079B1025"
5. Get latest drivers. I used 340.43
6. Unpack or run them once and navigate to its unpacked directory (e.g. C:\NVIDIA\DisplayDriver\340.43\Win8_WinVista_Win7_64)
7. Enter Display.Driver and edit any .inf. I used nvami.inf
8. Go to [NVIDIA_SetA_Devices.NTamd64.6.1] (6.0 = Vista, 6.1 = Win7, 6.2 = Win8, 6.3 = Win8.1) and find the DEV_ID from your HW ID. Mine is DEV_1391 from "PCI\VEN_10DE&DEV_1391&SUBSYS_079B1025"
9. Copy the respectful line (only one of the ones you'll find. I had four containing that DEV_ID)
10. Increment YYYY by 1 %NVIDIA_DEV.XXX.YYYY.ZZZZ%. In my case it was "%NVIDIA_DEV.1391.22CA.1043%" and I changed it to "%NVIDIA_DEV.1391.22CB.1043%"
11. Also update the SUBSYS of your HW ID. Example:
%NVIDIA_DEV.1391.22CB.1043% = Section308, PCI\VEN_10DE&DEV_1391&SUBSYS_22CA1043
became
%NVIDIA_DEV.1391.22CB.1043% = Section308, PCI\VEN_10DE&DEV_1391&SUBSYS_079B1025
12. Copy the string %NVIDIA_DEV.XXX.YYYY.ZZZZ% and scroll way down to the [String] sections and add a new line containing your new device. Make sure to leave out those pesky %. Example:
NVIDIA_DEV.1391.22CB.1043 = "NVIDIA GeForce GTX 850M - MODDED"
13. Save the file
14. Run the setup.exe in the upper level (one folder outside)
15. ???
16. PROFIT

All comments

David64

I just modded the drivers and they are now installing. I edited the nvami.inf and added these two lines in their respective sections:

[NVIDIA_SetA_Devices.NTamd64.6.1]
%NVIDIA_DEV.1391.22CB.1043% = Section308, PCI\VEN_10DE&DEV_1391&SUBSYS_079B1025

[String]
NVIDIA_DEV.1391.22CB.1043 = "NVIDIA GeForce GTX 850M - MODDED"

they just installed successfully! YAY Smiley Very Happy

for those who run in the same issue:
1. Discover the HW ID of you gfx card:
2. Open the device manager and go to the properties of your yet to be installed graphicscard (3D Video Controller)
3. go to the details tab and select Hardware IDs
4. Copy your HW ID. Mine is "PCI\VEN_10DE&DEV_1391&SUBSYS_079B1025"
5. Get latest drivers. I used 340.43
6. Unpack or run them once and navigate to its unpacked directory (e.g. C:\NVIDIA\DisplayDriver\340.43\Win8_WinVista_Win7_64)
7. Enter Display.Driver and edit any .inf. I used nvami.inf
8. Go to [NVIDIA_SetA_Devices.NTamd64.6.1] (6.0 = Vista, 6.1 = Win7, 6.2 = Win8, 6.3 = Win8.1) and find the DEV_ID from your HW ID. Mine is DEV_1391 from "PCI\VEN_10DE&DEV_1391&SUBSYS_079B1025"
9. Copy the respectful line (only one of the ones you'll find. I had four containing that DEV_ID)
10. Increment YYYY by 1 %NVIDIA_DEV.XXX.YYYY.ZZZZ%. In my case it was "%NVIDIA_DEV.1391.22CA.1043%" and I changed it to "%NVIDIA_DEV.1391.22CB.1043%"
11. Also update the SUBSYS of your HW ID. Example:
%NVIDIA_DEV.1391.22CB.1043% = Section308, PCI\VEN_10DE&DEV_1391&SUBSYS_22CA1043
became
%NVIDIA_DEV.1391.22CB.1043% = Section308, PCI\VEN_10DE&DEV_1391&SUBSYS_079B1025
12. Copy the string %NVIDIA_DEV.XXX.YYYY.ZZZZ% and scroll way down to the [String] sections and add a new line containing your new device. Make sure to leave out those pesky %. Example:
NVIDIA_DEV.1391.22CB.1043 = "NVIDIA GeForce GTX 850M - MODDED"
13. Save the file
14. Run the setup.exe in the upper level (one folder outside)
15. ???
16. PROFIT

therongguy

Hey, I know this is a bit off topic, but I'm considering buying the same laptop, and was wondering if it still has a mSATA-slot available like the last years model did? I just couldn't find the information, because there are no reviews out yet and the specifications also do not say anything about mSATA-slots.

I'm definitely going to bookmark this thread, in case I run into similar problems.

David64

It does. I have a Crucial M500 240GB installed :-)

therongguy

Ok, thanks for the quick response, really helped me out Smiley Happy I'm actually going to throw the same mSSD in.

therongguy

Didn't work for me... Probably because I'm running Windows 8.1?

David64

Nope, should work. Just do it for ntamd6.3

therongguy

Yeah I did edit for 6.3, but it doesn't work. Fails while installing.

David64

Error msg and which driver?

therongguy

Driver is 340.52, which is the newest version. It just starts installing, and fails at maybe 2% or so. There's no error message, it just says that installation failed for the drivers.

David64

i didnt test the latest ones yet, so i might actually run into the same issue. try 340.43 or 337.88 instead. also make sure to use the string provided on your system. it may differ from mine!

therongguy

Yeah, I'll try to get my hands on the same version of drivers as you have, since that's still way newer than the ones Acer provides. And yes, I did use my own string.

David64

if it still wont work with that version (you can find it on guru3d.com), paste your string and ill mod the inf for you, just to make sure Smiley Happy

therongguy

Still having the same problem, even with 340.43. Here are my modifications:

[NVIDIA_SetA_Devices.NTamd64.6.3]

%NVIDIA_DEV.1391.22CB.1043% = Section310, PCI\VEN_10DE&DEV_1391&SUBSYS_079B1025 (I have the same HW ID)

and

[Strings]

NVIDIA_DEV.1391.22CB.1043 = "NVIDIA GeForce GTX 850M - MODDED"

sergi

You have to disable driver signature enforcement!

Then try this:

1) open nvami.inf in notepad
2) replace all SUBSYS_22CA1043 with SUBSYS_079B1025
3) replace all 22CA with 22CB
4) save and run setup.exe

therongguy

It worked! But when disabling driver signature enforcement, it only disables it until the next restart right? And will Optimus still work?

Elkim

Hello,

I have same exact problem but I just can't figure it out. I solved the part which installer says the it couldn't found compatible hardware. During the instalation, it fails with no error meesagges but its canceled that PhysX, GeForce Exp and driver 340.52 wasn't installed.

This is what appears in my HW ID i tried it with 1st and 2nd lines, whole thing in this topic. Nothing work.

hwid

I also changed all 222CA to 22CB but nothing works. Can I ask someone to edit and upload that nvami file which will works for me? Iam trying to instal 340.52 drivers. Thanks alot

therongguy

You have to disable driver signature enforcement. Look it up on Google.

Elkim

Thanks alot man, that works Smiley Happy

David64

didnt have to do it on win7, but apparently, win8 is even more strict about this... dunno why acer so so behind on properly providing drivers for the products. when i asked them about usable drivers on win7, they just told me, win7 isnt supported. yeah right. bull**bleep** support.

therongguy

I think it's because when you do a fresh install of another OS, it sort of removes whatever Acer has done to prevent you from installing drivers directly from the HW manufacturers, which sucks. I don't understand why they have to do it.

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