Who crashed

Καλησπέρα, μετά από κάποιες μπλε οθόνες το who crashed μου έβγαλε τα παρακάτω:
(να σημειωθεί ότι το σύστημα είναι απο χθεσινό format και γενικά είναι καινούριο)
On Thu 6/12/2018 9:31:30 πμ your computer crashed or a problem was reported
crash dump file: C:\Windows\Minidump\120618-7828-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x1B1130)
Bugcheck code: 0xEF (0xFFFFAC04B24DC140, 0x0, 0x0, 0x0)
Error: CRITICAL_PROCESS_DIED
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 a critical system process died.
There is a possibility this problem was caused by a virus or other malware.
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 6/12/2018 9:31:30 πμ your computer crashed or a problem was reported
crash dump file: C:\Windows\MEMORY.DMP
This was probably caused by the following module: ntdll.sys (ntdll!NtTerminateProcess+0x14)
Bugcheck code: 0xEF (0xFFFFAC04B24DC140, 0x0, 0x0, 0x0)
Error: CRITICAL_PROCESS_DIED
Bug check description: This indicates that a critical system process died.
There is a possibility this problem was caused by a virus or other malware.
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: ntdll.sys .
Google query: ntdll.sys CRITICAL_PROCESS_DIED

On Thu 6/12/2018 12:23:35 πμ your computer crashed or a problem was reported
crash dump file: C:\Windows\Minidump\120618-7656-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0xFBC20)
Bugcheck code: 0x1000007E (0xFFFFFFFFC0000005, 0xFFFFF804462FCC20, 0xFFFFF285E1CD1868, 0xFFFFF285E1CD10B0)
Error: SYSTEM_THREAD_EXCEPTION_NOT_HANDLED_M
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 a system thread generated an exception which the error handler did not catch.
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 the Windows kernel. Possibly this problem is caused by another driver that cannot be identified at this time.

Conclusion

3 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:

ntdll.sys

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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