Windows 10: PC keeps shutting down itself and turning on itself randomly Winlogon.exe initiating shutdowns

I have already tried:Swapped out RAM SticksSwapped out GPURemoved GPUSwapped out PSUSwapped out CMOS Battery from MOBOReinstalled WindowsRecabled everythingConfigured Power SettingsChanged Registry LogsChanged to a different power socketChanged to a different power regulator.Source: Kernel-PowerEvent ID: 41The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.Source: User32Event ID: 1074The process C:\WINDOWS\system32\winlogon.exe DESKTOP-0G9VTAA has initiated the Apagar of computer DESKTO

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My PC shuts off randomly

Hi there! I am Louie, a Microsoft Community member and a fellow Windows 10 user like you. Hope you're doing well and safe there.

I'm sorry that you're having trouble with your pc shutting off by itself randomly. I would highly suggest you to check this link and follow the steps provided by Greg Carmack to fix this issue:

https://answers.microsoft.com/en-us/windows/for...

Hope this information helps

Sincerely,

Louie

 

My pc takes for ever to shut down when i restart

Suggest cleaning up your startup list .There may be many services / Apps you can remove on startup which is not needed on boot or during shutdown.
Before you shutdown the Pc check what is running in Task Manager as a program or service in not killing the process on shutdown

Would suggest cleaning up running apps and services -Autoruns, StartupMonitor,HighjackThis,
Malware Scan - Malwarebytes,ADWcleaner, Combofix

 

Pc shut down randomly with no error message

Sounds like you might have bad RAM. Have you run it through Memtest86? If your RAM checks out, check that your CPU is not overheating. If that is ok, then it will most likely be your power supply. Follow these steps in this order and let me know what you find. Thanks!