Ecran bleu : Thread stuck in Device Driver

Bonjour,

J'ai récemment changé de carte graphique ainsi que d'alimentation, pour respectivement :
-Radeon RX Vega 580
-Cooler Master - V 750 GOLD

Problème, depuis ce changement, mon ordinateur est instable lorsque la carte utilise beaucoup ses capacités.

J'ai eu ces problèmes :
-Crash écran noir avec ventilateurs qui tournent à fond
-Crash écran bleu : Thread stuck in Device Driver
-Freeze complet de l'ordi (son compris)

mes actions :

J'ai initialement pensé à un problème de surchauffe, la carte atteignant parfois 80°C. J'ai donc poussé les ventilateurs à fond, et même comme ça, ça plante.

Chose étonnante, même en faisant tourner FurMark et OCCT en même temps, le système reste stable, malgré que la carte plafonne à 78°C.


Après moultes tentatives de réinstallation de drivers en mode sans echec, MAJ Windows, réglages de la CG, utilisations de logiciels de gestion de l'alim' et j'en passe... J'ai décidé de tout formater et de repartir sur des bases saines.

Aujourd'hui :
-Windows quasi vierge, tous les drivers sont à jour, ainsi que l'OS
-J'ai flashé le Bios, qui est donc à jour
-J'ai analysé le système avec GData, qui est sain.
-J'ai exécuté "sfc /scannow"

La carte reste stable plus longtemps si je diminue les contraintes graphiques. Mais des crash peuvent tout de même survenir. Elle est surdimensionnée par rapport aux jeux de test, à savoir Monster Hunter World, et No Man's Sky.

Après mon dernier crash, voici le rapport de WhoCrashed :
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"Computer name: DESKTOP-B8591KL
Windows version: Windows 10 , 10.0, version 1903, build: 18362
Windows dir: C:\Windows
Hardware: MS-7693, MSI, 970 GAMING (MS-7693)
CPU: AuthenticAMD AMD FX(tm)-8350 Eight-Core Processor AMD8664, level: 21
8 logical processors, active mask: 255
RAM: 17125625856 bytes (15,9GB)




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Crash Dump Analysis
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Crash dumps are enabled on your computer.

Crash dump directories:
C:\Windows
C:\Windows\Minidump

On Sun 29/09/2019 18:50:47 your computer crashed or a problem was reported
crash dump file: C:\Windows\Minidump\092919-5812-01.dmp
This was probably caused by the following module: dxgkrnl.sys (dxgkrnl+0x40DB5)
Bugcheck code: 0x100000EA (0xFFFFBC091225E4C0, 0x0, 0x0, 0x0)
Error: THREAD_STUCK_IN_DEVICE_DRIVER_M
file path: C:\Windows\system32\drivers\dxgkrnl.sys
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: DirectX Graphics Kernel
Bug check description: This indicates that a thread in a device driver is endlessly spinning.
This appears to be a typical software driver bug and is not likely to be caused by a hardware problem.
The crash took place in a Microsoft module. Your system configuration may be incorrect. Possibly this problem is caused by another driver on your system that cannot be identified at this time.



On Sun 29/09/2019 18:50:47 your computer crashed or a problem was reported
crash dump file: C:\Windows\MEMORY.DMP
This was probably caused by the following module: atikmdag.sys (atikmdag+0x722BA)
Bugcheck code: 0xEA (0xFFFFBC091225E4C0, 0x0, 0x0, 0x0)
Error: THREAD_STUCK_IN_DEVICE_DRIVER
file path: C:\Windows\System32\DriverStore\FileRepository\u0346940.inf_amd64_1ea00c8019a8594e\B346681\atikmdag.sys
product: ATI Radeon Family
company: Advanced Micro Devices, Inc.
description: ATI Radeon Kernel Mode Driver
Bug check description: This indicates that a thread in a device driver is endlessly spinning.
This appears to be a typical software driver bug and is not likely to be caused by a hardware problem.
A third party driver was identified as the probable root cause of this system error. It is suggested you look for an update for the following driver: atikmdag.sys (ATI Radeon Kernel Mode Driver, Advanced Micro Devices, Inc.).
Google query: atikmdag.sys Advanced Micro Devices, Inc. THREAD_STUCK_IN_DEVICE_DRIVER





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Conclusion
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2 crash dumps have been found and analyzed. A third party driver has been identified to be causing system crashes on your computer. It is strongly suggested that you check for updates for these drivers on their company websites. Click on the links below to search with Google for updates for these drivers:

atikmdag.sys (ATI Radeon Kernel Mode Driver, Advanced Micro Devices, Inc.)

If no updates for these drivers are available, try searching with Google on the names of these drivers in combination with the errors that have been reported for these drivers. Include the brand and model name of your computer as well in the query. This often yields interesting results from discussions on the web by users who have been experiencing similar problems.
"

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Voilà 2 jours que je fouille et applique de nombreux correctifs, sans succès. Je suis à cours d'idées de mon coté, alors si quelqu'un est en mesure de m'apporter des pistes, je lui en serai grandement reconnaissant!

Merci d'avance.