Msi gt72 GPU desactivate alone (Black Scree)

Hi,


My brother had a msi gt72 with a gtx 980m (upgrade from me). After 1 year of use now the laptop got black screen with the unplugged usb sound, he bought a new gtx 980m and this is the same.

- Win10 reinstall done 3 Time

- Thermal past changed also


Wenn he removed thz gpu the laptop work 100%, what can be the problem? Pcie port default?



Thank you for your help

 

Sounds like the MUX switch got stuck issue.

Remove the MXM card and boot without it. It will restart a few times and should boot on the Intel IGPU. Once into windows and enable Windows Remote Desktop.

Shutdown the laptop and reinstall the MXM GPU. It should flip back to dGPU or stay on IGP.

Boot back into windows and then if you have a screen login and press the MUX button and let it reboot. If not screen log in to Windows Remote Desktop, press the MUX button. On the laptop and use the system remoted in to press the OK button.

Sent from my SNE-LX1 using Tapatalk

 

Hello,

Thank you for the reply.

So you meant the problem cam from the mux button? We should be abble the see the desktop from windows remote desktop?

I will tell you tomorrow, if its works.

Good night from Germany!

 

Yes basically some times when going from iGPU to dGPU via the mux button it can get stuck in between, showing no screen output, however i just had another idea. Have you tried an HDMI screen connection to see if that gets a signal from the system if you can't remote desktop into the system.

 

When I used to get the black screen because of a MUX issue, turning off the laptop, then holding down the power button for 10-20 seconds to reset the BIOS would fix it.

 

Yes he tried with the HDMI but it's didn't works. He will try today your first method

 

Unfortunately he tried this too... Didn't works

 

or power delivery
similar to many devices + this gpu - burned mobo



45s power button is CMOS RESET

+ec reset
EC - fully shutdown ,.,.no AC .,,.small hole on back-cover "30s"
after this add AC "wait" 5min ,..,run system

 

it is possible that even if you manage to get it up and running
d-gpu render still trigger this problem - shutdown in stress

here is possible only mod vbios - lock lower voltage "not stress this machine fully"
verify battery wear level / PSU voltage .,,others problems

.,.,.but a lot of users exchanged it all and nothing happened
must be burned any small resistor on mobo and higher power delivery ,..,trigger limit

will see
good luck

 

it is also possible that the old card works normally .,.only not have available power
do not discard the old card

 

So the laptop didnt want to start again yo windows, "No bootmanager" now after Cmos clear no more access to the bios, the keyboard bling red. Any idea?

 

Ok, now the screen works, we try to repair windows 10.

 

So after new installation of win10 the Internal graphic adapter works without any problem but when we restart after pressing the GPU button, win10 start and there is no GTX to be found, and black screen after.

I tried to flash the vbios with nvflash but there is no "graphic adapter to be found"

I'm not sure but can be the PCIE burned ???