Unexpected reboots since last update

[BoroFootyFan]

System Windows 10 Home (64-Bit)

Version 20H2

OS Build 19042.867


Since the update on 11/03/2021 I have had 4 occurences of an unexpected reboot. The first of these occurred on 12/03/2021. No warning is given, no blue screen, the screen just goes black and then the boot sequence starts. The only events I can find are a critial unexpected reboot error and an unexpected shutdown error (see below). I did not experience any such problems prior to the 20H2 update. The only user activity was use of the Firefox browser. Please advise



CRITICAL ERROR:-

Log Name: System
Source: Microsoft-Windows-Kernel-Power
Date: 20/03/2021 18:24:40
Event ID: 41
Task Category: (63)
Level: Critical
Keywords: (70368744177664),(2)
User: SYSTEM
Computer: Mike-PC
Description:
The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-Kernel-Power" Guid="{331c3b3a-2005-44c2-ac5e-77220c37d6b4}" />
<EventID>41</EventID>
<Version>8</Version>
<Level>1</Level>
<Task>63</Task>
<Opcode>0</Opcode>
<Keywords>0x8000400000000002</Keywords>
<TimeCreated SystemTime="2021-03-20T18:24:40.0030875Z" />
<EventRecordID>2411</EventRecordID>
<Correlation />
<Execution ProcessID="4" ThreadID="8" />
<Channel>System</Channel>
<Computer>Mike-PC</Computer>
<Security UserID="S-1-5-18" />
</System>
<EventData>
<Data Name="BugcheckCode">0</Data>
<Data Name="BugcheckParameter1">0x0</Data>
<Data Name="BugcheckParameter2">0x0</Data>
<Data Name="BugcheckParameter3">0x0</Data>
<Data Name="BugcheckParameter4">0x0</Data>
<Data Name="SleepInProgress">0</Data>
<Data Name="PowerButtonTimestamp">0</Data>
<Data Name="BootAppStatus">0</Data>
<Data Name="Checkpoint">0</Data>
<Data Name="ConnectedStandbyInProgress">false</Data>
<Data Name="SystemSleepTransitionsToOn">0</Data>
<Data Name="CsEntryScenarioInstanceId">0</Data>
<Data Name="BugcheckInfoFromEFI">false</Data>
<Data Name="CheckpointStatus">0</Data>
<Data Name="CsEntryScenarioInstanceIdV2">0</Data>
<Data Name="LongPowerButtonPressDetected">false</Data>
</EventData>
</Event>




ERROR:-

Log Name: System
Source: EventLog
Date: 20/03/2021 18:25:07
Event ID: 6008
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: Mike-PC
Description:
The previous system shutdown at 6:22:52 PM on ‎3/‎20/‎2021 was unexpected.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="EventLog" />
<EventID Qualifiers="32768">6008</EventID>
<Version>0</Version>
<Level>2</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2021-03-20T18:25:07.1755595Z" />
<EventRecordID>2398</EventRecordID>
<Correlation />
<Execution ProcessID="0" ThreadID="0" />
<Channel>System</Channel>
<Computer>Mike-PC</Computer>
<Security />
</System>
<EventData>
<Data>6:22:52 PM</Data>
<Data>‎3/‎20/‎2021</Data>
<Data>
</Data>
<Data>
</Data>
<Data>4836</Data>
<Data>
</Data>
<Data>
</Data>
<Binary>E507030006001400120016003400C903E507030006001400120016003400C903600900003C000000010000006009000001000000B00400000000000000000000</Binary>
</EventData>
</Event>

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