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help : eGPU usage 0%

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Hello everybody !

I'm quite new to all the eGPU stuff so this may be really an easy fix, but still. 


Let's start off with my specs:



I7 4700 hq 2.4 GHz

8Go of Ram

Nvidia GT 840M already build in

eGPU : GTX 960

eGPU connected via mPCIE

(tell me if there's something missing!)


I have a little problem here with my eGPU setup ==> everything works fine (fans spin, can be controlled by MSI afterburner ...) 

But it seems like none of my games uses it .


I had MSI Kombustor 3 with it's GPU monitoring running while gaming and realised that the usage of my eGPU was 0% .


What I already tried so far:


-unnistall all drivers thanks to DDU (Display Driver Unnistaller) and re-instal them.

-I tried to deactivate my GT 840M to see if I could force my laptop to use the GTX 960, but ... it used the intel graphics instead. so, yeah.

-tried to experiment around with the NVidia control pannel to force my laptop to use the eGPU 


The funny thing is, that my eGPU is running at 80-90% for ONE applicatio only: total war Attila 's launcher .

Only the launcher, not the game itself.


A friend of mine told me right click on a game icon and chose  "which GPU i want to use" . But apparently, I don't have an option to select that.


It maybe be a little confused, i'm sorry if it's the case, I'm not really good at it, plus english isn't my mother language..


So, if anyone could give me some thing to test out, i'd be very happy.

oh and, of course, if there's some info missing, all you need to do is ask.




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ohhh. GPU drivers ... already did that some time ago

The one I had was a month old, the new one is 1.5 weeks old, so .. yeah. thanks. 

But that didn't solve my problem.

Here, maybe that screen shot will help understand my problem better. This is after I launched a game. 0% usage for my GTX 960. 

And yes, I've put everything I could in the Nvidia Control Panel in order for it to use the 960 but ... here I am.

GPU usage.jpg

edit: WAIT !! I got confused: for some reason it changed my GPU 1 & 2 and I mistook the 960 for my 840M, so my bad, it 's working now. 

I just didn't get any awesome FPS boost and therefore thought that it wasn't working.


edit2: Restared my computer, and it's back. the 960 is "GPU 2" and not used anymore... how's that possible ?

GPU usage2.jpg

Edited by Chevrotine669
my bad !
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On 17/06/2016 at 9:21 PM, Chevrotine669 said:

A friend of mine told me right click on a game icon and chose  "which GPU i want to use" . But apparently, I don't have an option to select that.

That is what I meant : I don't have any option to select my GPU via context menu.. and that's most of my problem ...

And disabling the dGPU will make it run my intel graphics ..

Edited by Chevrotine669
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Have you enabled the option to show "Run on..." in context menu in the nvidia drivers?


And does it work with an external monitor? This will help narrow down what is going wrong.

Edited by utopian201
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I'm going to see if it's enabled or not (might be it). Btw , where do I need to search for that ? CP?

and ... try to find an external monitor .


Edit: I had a box called "show execute with GPU option to the contexte menu" (I translated it from my language so it might be called different on your PC..) should be it right? well it was enabled. (I did disable it to re-enable it but didn't change a thing).

Edited by Chevrotine669
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ok, I just plugged my eGPU to my TV via HDMI and I could use the TV as an additional screen .


Could you tell me what I just tested there? I planned to help a friend do the same as soon as I managed to get my eGPU running, and I'd like to know what I just tested there. The GPU itself? or the connection between the laptop and the eGPU ? or ...?


Thanks !


Edited by Chevrotine669
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Ok, the instructions are quite long winded but here goes:

1. Go to Device manager and go to your GTX 960


2. On the details tab, go to Hardware IDs. The second line will be something like


And make a note of the bolded numbers. Your ones will be different.

I will name these three numbers like this:

A: 1183

B: 2845

C: 1462


3. Use DDU driver uninstaller to remove your nvidia drivers.


4. Go to your nvidia driver package. You may need to unzip them.


5. Go to the Display.Driver folder and open up nv_dispi.inf


6. Search for all lines starting with


In my case, I searched for all lines starting with



In my case (because I am using a 660Ti) there were two lines;

%NVIDIA_DEV.1183%           = Section009, PCI\VEN_10DE&DEV_1183 (line 400 in my file)  

NVIDIA_DEV.1183 = "NVIDIA GeForce GTX 660 Ti" (line 7959 in my file)


There may be more or less depending on what version drivers you use and what your card is.


Comment both of them out by placing a semi colon at the start like this:

;%NVIDIA_DEV.1183%           = Section009, PCI\VEN_10DE&DEV_1183

;NVIDIA_DEV.1183 = "NVIDIA GeForce GTX 660 Ti"


This disables the desktop drivers (which don't support optimus) for the 660Ti. If you tried to now install this driver package, it would say no supported hardware found (because we have disabled the driver for the 660Ti)


7. Open up nvami.inf and search for the [Strings] section. On nvidia drivers 368.22, it is on line 9235.


8. Place this line in that section underneath "NVIDIA_A = "NVIDIA":


NVIDIA_DEV.(A).(B).(C) = "(your graphics card)"


In my one I did this:


NVIDIA_DEV.1183.2845.1462 = "NVIDIA GeForce GTX 660 Ti"


8. In the same file, search for [Section and look for one that has the key line
NVSupportOptimus = 1


This is a driver that will support optimus. In my one, [Section001] had that line.


9. In the same file, search for the [NVIDIA_Devices.NTamd64.10.0] section. On my one it is line 283.


10. Place this line underneath that section:

%NVIDIA_DEV.(A).(B).(C)% = Section001, PCI\VEN_10DE&DEV_(A)&SUBSYS_(B)(C)


In my one, it looks like

%NVIDIA_DEV.1183.2845.1462% = Section001, PCI\VEN_10DE&DEV_1183&SUBSYS_28451462


I used Section001 because in my driver, Section001 supported Optimus. Your Section001 may not, so find a Section00X that does.


This tells the installer that, if it finds a 660Ti, use the driver at Section001 which supports optimus.


11. With your graphics card plugged in, install the driver. And then you should have it working on the internal screen!


Let me know how you get on.

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Hey! thanks for the awesome guide (very well explained btw!) . 


I did everything that is written, but for some reason, when trying to install it, it fails at some point. (says something like "installation program failed")


I tried the section001 (point n° 8 on your guide) since it was the first one which had the " NVSupportOptimus = 1 " line.

I also tried the section 013 which is the second time  " NVSupportOptimus = 1 " appears, but still same result.


Should I keep trying other sections? (there are still some left which have the line)


Thanks again !

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What happens when you uncomment those lines (ie reenable the lines in nv_dispi.inf)?

That should make it work again (but not the internal screen). If that is the case, I can only assume there is an error in the nvami.inf - it means the installer cannot find a driver for your card.

Maybe paste the lines you've added and commented out as well has your hardware ID?

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ok, I tested with the uncommented lines and it still failed . I double checked (more than that actually..) the lines I added in the nvami file, just to be sure..


(A) 1401

(B) 3201

(C) 1462


lines commented out:


;%NVIDIA_DEV.1401%           = Section045, PCI\VEN_10DE&DEV_1401   

;NVIDIA_DEV.1401 = "NVIDIA GeForce GTX 960"



Added lines:


NVIDIA_DEV.1401.3201.1462 = "NVIDIA GeForce GTX 960"

%NVIDIA_DEV.1401.3201.1462% = Section001, PCI\VEN_10DE&DEV_1401&SUBSYS_32011462



Edited by Chevrotine669
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