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Windows 11 PC redémarrered automatiquement?

ayi

I had some processes running sur mon Windows (taking a long time) and many open applications (Eclipse, sqlDeveloper etc).

C'est important to know that while the PC was running - It was disconnected depuis le web (physically supprimé the Ethernet cable)

Yesterday my système redémarré causing the processes to stop and applications began closing/crashing. I lost a bunch of data...

My question is comment find out what caused Windows to redémarrer?

Je soupçonne c'est related to a Windows mise à jour?

UPDATE

Adding the events from Event viewer:

    The kernel power manager has initiated a shutdown transition.Action: Power Action Reboot 
    The system has prepared for a system initiated reboot from Sleeping (Idle).
    Virtualization-based security (policies: VBS Enabled,VSM Required,Boot Chain Signer Soft Enforced) is enabled due to HyperV.
    The last shutdown's success status was true. The last boot's success status was true.
    EFI time zone bias: 2047. Daylight flags: 0. Firmware time: ‎2023‎-‎12‎-‎14T00:33:07.000000000Z.
    The boot menu policy was 0x1.
    The boot type was 0x0.
    There are 0x1 boot options on this system.
    The bootmgr spent 0 ms waiting for user input.
    The firmware reported boot metrics.
    ACPI thermal zone \_TZ.TZ00 has been enumerated.     
    ACPI thermal zone \_TZ.TZ01 has been enumerated.         
    The system has detected a system initiated reboot from Sleeping (Idle).
    Connectivity state in standby: Disconnected, Reason: NIC compliance
    The system session has transitioned from 0 to 1.Reason SessionUnlock 
    The system session has transitioned from 1 to 3.Reason InputAccelerometer 
    The system session has transitioned from 3 to 4.Reason InputAccelerometer 
    The system session has transitioned from 4 to 6.Reason InputHid

ayi

To find out the reason for a redémarrer, use one du following commands:

PowerShell :

Get-WinEvent -FilterHashtable @{ LogName = 'System'; Id = 41, 1074, 6006, 6605, 6008; } | Format-List Id, LevelDisplayName, TimeCreated, Message

CMD :

wevtutil qe System /q:"*[System[(EventID=41) or (EventID=1074) or (EventID=6006) or (EventID=6005) or (EventID=6008)]]" /c:100 /f:text /rd:true

Si le ordinateur has crashed, and not just rebooted,
check dossier %SystemRoot%\Minidump for a .dmp fichier whose
creation-time corresponds vers le time du crash.

If found, analyze this fichier using
BlueScreenView,
or zip it up and publish it online for us to have a look
(OneDrive, Dropbox etc).

If minidumps ne sont pas activé, I suggest to activer Small mémoire dumps.
See the article
Configure Windows 10 to Create Minidump on BSOD.

Useful reference :
How to find out why your PC shut down for no reason on Windows 10 and 11.