Merci beaucoup pour cette réponse !
Les plantages interviennent depuis une mise à jour de Windows mais rien de systématique.
Voici les résultats du scan FRST :
FRST.txt
https://pjjoint.malekal.com/files.php?id=FRST_20190513_w7g14v8t13d14
Shortcut.txt
https://pjjoint.malekal.com/files.php?id=20190513_q7s8w10t13j7
Additionnal.txt
https://pjjoint.malekal.com/files.php?id=20190513_m7w6k8k12j13
Et l'analyse WhoCrashed :
System Information (local)
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Computer name: DESKTOP-R3UJRTS
Windows version: Windows 10 , 10.0, build: 17763
Windows dir: C:\WINDOWS
Hardware: XPS 13 9350, Dell Inc., 07TYC2
CPU: GenuineIntel Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz Intel8664, level: 6
4 logical processors, active mask: 15
RAM: 8434102272 bytes (7,9GB)
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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 Mon 13/05/2019 08:49:40 your computer crashed or a problem was reported
crash dump file: C:\WINDOWS\Minidump\051319-6359-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x1B37E0)
Bugcheck code: 0xA (0xFFFFA78000000000, 0x2, 0x0, 0xFFFFF8023DD5D780)
Error: IRQL_NOT_LESS_OR_EQUAL
file path: C:\WINDOWS\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This indicates that Microsoft Windows or a kernel-mode driver accessed paged memory at DISPATCH_LEVEL or above. This is a software bug.
This bug check belongs to the crash dump test that you have performed with WhoCrashed or other software. It means that a crash dump file was properly written out.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver that cannot be identified at this time.
On Mon 13/05/2019 08:49:40 your computer crashed or a problem was reported
crash dump file: C:\WINDOWS\MEMORY.DMP
This was probably caused by the following module: storport.sys (storport!StorPortExtendedFunction+0x365)
Bugcheck code: 0xA (0xFFFFA78000000000, 0x2, 0x0, 0xFFFFF8023DD5D780)
Error: IRQL_NOT_LESS_OR_EQUAL
file path: C:\WINDOWS\system32\drivers\storport.sys
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: Microsoft Storage Port Driver
Bug check description: This indicates that Microsoft Windows or a kernel-mode driver accessed paged memory at DISPATCH_LEVEL or above. This is a software bug.
This bug check belongs to the crash dump test that you have performed with WhoCrashed or other software. It means that a crash dump file was properly written out.
The crash took place in a storage driver or controller driver. Since there is no other responsible driver detected, this could be pointing to a malfunctioning drive or corrupted disk. It's suggested that you run CHKDSK.
On Sun 12/05/2019 23:09:32 your computer crashed or a problem was reported
crash dump file: C:\WINDOWS\Minidump\051319-6406-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x1B37E0)
Bugcheck code: 0xA (0xFFFF8AC540000000, 0x2, 0x0, 0xFFFFF8025C772780)
Error: IRQL_NOT_LESS_OR_EQUAL
file path: C:\WINDOWS\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This indicates that Microsoft Windows or a kernel-mode driver accessed paged memory at DISPATCH_LEVEL or above. This is a software bug.
This bug check belongs to the crash dump test that you have performed with WhoCrashed or other software. It means that a crash dump file was properly written out.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver that cannot be identified at this time.
On Sun 12/05/2019 11:20:05 your computer crashed or a problem was reported
crash dump file: C:\WINDOWS\Minidump\051219-9359-01.dmp
This was probably caused by the following module: Unknown (0xFFFFF8006436C780)
Bugcheck code: 0xA (0xFFFF974B80000000, 0x2, 0x0, 0xFFFFF8006436C780)
Error: IRQL_NOT_LESS_OR_EQUAL
Bug check description: This indicates that Microsoft Windows or a kernel-mode driver accessed paged memory at DISPATCH_LEVEL or above. This is a software bug.
This bug check belongs to the crash dump test that you have performed with WhoCrashed or other software. It means that a crash dump file was properly written out.
A third party driver was identified as the probable root cause of this system error.
Google query: IRQL_NOT_LESS_OR_EQUAL