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Internal monitor problem  


Samim Zalmay
Active Member
Joined: 1 year ago

Hi guys,

I managed to make my exp gdc work. I only have one problem. 

When I use internal laptop screen the clock speed of my GTX 970 gets stuck 135mhz. Therefore I dont get more than 10 FPS in any game. 

When I use external TV I get 100+ FPS. Clock speeds get normal. So that means everything works. My card, psu, everything is ok. I dont have a monitor so I would love to use internal monitor of my laptop. But when I switch to internal screen clock speed get stuck again. And performance is more than poor. 

Its set at Gen 2. But it shows only 1.1. I used afterburner to change settings but it doesnt work. Bios is set to iGFX. DGPU is disabled. No codes no crashesh. 

Tried also to disable hd3000 intel. Didnt work. Changed all kind of settings in nvidia control panel. Disnt work.

Can anyone help me with this? Any suggestions?


Asus n53sm / i7 2670qm/ gt670 (disabled) / 14 Gb memory / modded bios 

Exp Gdc 8.4 nvidia gtx 970 / psu 450 watt 






To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.


Samim Zalmay
Active Member
Joined: 1 year ago

It turns out that it was a driver/software problem. Internal monitor didnt work with Windows 10 newest version. Neither with 1903 V1. Also neither with new nvidia drivers.

I installed Windows 10 1809 and and old nvidia drivers something like 365.xx or something. Now internal monitor works fine. Two problems here, performance is poor. Btw Windows 7 worked aswell. 

Around 30 FPS in Furmark 1080 preset test. Sencondly new games dont work with old drivers. 

I will order a LCD controller board for my laptop screen. So I can use my laptop display as external display and plug it directly to the card. I will have much better performance. Hopefully it will work with new drivers. 

Until my board arrives from China, does anyone know how to improve internal display performance? 

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.


Active Member
Joined: 11 months ago



My Setup:

HP Probook 6560b

EXP GDC Beast 8.5c Expresscard Version

Nvidia GTX 1050 TI 

BeQuiet 300W PSU


After a lot of Problems my GPU would detected and it runs perfect on a external Monitor.

(Does anyone need my modified dsdt?)


But now i want to play on the internal Display from my Notebook. The GPU don't see this Display and i can't open the NVIDA control center to manage anything.

I used some Tutorials from YouTube where People edit the NVAMI.inf with their GPU Hardware-ID. It dont help....


Is there any other Option?


Btw. thank you all for this forum and all your comments. It helped me really great. 


HP Probook 6560b, 6570b, 650 G1, 650 G2 // EXP GDC Beast 8.5C // NVIDIA 1050 TI // 300W PSU
Waiting for materials for Build a custom eGPU Chassi

New Member
Joined: 2 months ago

@samim_zalmay, Hey! Sorry for necroposting but how did LCD controller board + eGPU + internal monitor solution work out for you? Is the performance compatible to external monitor?


HP Elitebook 8470p (8 GB RAM, 240gb SSD, 1600x900 monitor)
GTX 1060 3 GB