Can someone tell me what is most likely causing these? Her is the report from WhoCrashed:
Crash dumps are enabled on your computer.
Crash dump directories:
C:\WINDOWS
C:\WINDOWS\Minidump
On Thu 19/07/2018 9:11:05 PM your computer crashed or a problem was reported
crash dump file: C:\WINDOWS\Minidump\071918-24921-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x175570)
Bugcheck code: 0x139 (0x3, 0xFFFFD2834DA6F3D0, 0xFFFFD2834DA6F328, 0x0)
Error: KERNEL_SECURITY_CHECK_FAILURE
file path: C:\WINDOWS\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: The kernel has detected the corruption of a critical data structure.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver that cannot be identified at this time.
On Thu 19/07/2018 9:11:05 PM your computer crashed or a problem was reported
crash dump file: C:\WINDOWS\MEMORY.DMP
This was probably caused by the following module: ntkrnlmp.exe (nt!setjmpex+0x85B9)
Bugcheck code: 0x139 (0x3, 0xFFFFD2834DA6F3D0, 0xFFFFD2834DA6F328, 0x0)
Error: KERNEL_SECURITY_CHECK_FAILURE
Bug check description: The kernel has detected the corruption of a critical data structure.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver that cannot be identified at this time.
On Wed 18/07/2018 5:25:09 PM your computer crashed or a problem was reported
crash dump file: C:\WINDOWS\Minidump\071818-24906-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x175570)
Bugcheck code: 0x139 (0x3, 0xFFFF92041AC14330, 0xFFFF92041AC14288, 0x0)
Error: KERNEL_SECURITY_CHECK_FAILURE
file path: C:\WINDOWS\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: The kernel has detected the corruption of a critical data structure.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver that cannot be identified at this time.
Crash dumps are enabled on your computer.
Crash dump directories:
C:\WINDOWS
C:\WINDOWS\Minidump
On Thu 19/07/2018 9:11:05 PM your computer crashed or a problem was reported
crash dump file: C:\WINDOWS\Minidump\071918-24921-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x175570)
Bugcheck code: 0x139 (0x3, 0xFFFFD2834DA6F3D0, 0xFFFFD2834DA6F328, 0x0)
Error: KERNEL_SECURITY_CHECK_FAILURE
file path: C:\WINDOWS\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: The kernel has detected the corruption of a critical data structure.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver that cannot be identified at this time.
On Thu 19/07/2018 9:11:05 PM your computer crashed or a problem was reported
crash dump file: C:\WINDOWS\MEMORY.DMP
This was probably caused by the following module: ntkrnlmp.exe (nt!setjmpex+0x85B9)
Bugcheck code: 0x139 (0x3, 0xFFFFD2834DA6F3D0, 0xFFFFD2834DA6F328, 0x0)
Error: KERNEL_SECURITY_CHECK_FAILURE
Bug check description: The kernel has detected the corruption of a critical data structure.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver that cannot be identified at this time.
On Wed 18/07/2018 5:25:09 PM your computer crashed or a problem was reported
crash dump file: C:\WINDOWS\Minidump\071818-24906-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x175570)
Bugcheck code: 0x139 (0x3, 0xFFFF92041AC14330, 0xFFFF92041AC14288, 0x0)
Error: KERNEL_SECURITY_CHECK_FAILURE
file path: C:\WINDOWS\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: The kernel has detected the corruption of a critical data structure.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver that cannot be identified at this time.