Windows 10: Hello. Ive been experiencing issues involving shutdowns and sudden restarts/crashes

These only happen when playing graphic intense games. Event viewer just says thisLog Name: System Source: Microsoft-Windows-Kernel-Power Date: 6/19/2024 1:12:59 AM Event ID: 41 Task Category: 63 Level: Critical Keywords: 70368744177664,2 User: SYSTEM Computer: Delatorius 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: http://schemas.microsoft.com/win/2004/08/events/event"> 41 9 1

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Sudden system shutdown/restart, what could be causing it?

Hello all,
I have been experienced 4 sudden shutdown/restart in the past month!
I have recently bought a new CPU (4790K) and updated my motherboard(Asus H87ME) to support that CPU.
and I dont remember any other changes that I have done except these two.
Initially I thought Maybe its because of the CPU overheating , which causes the system to restart suddenly, since I thought maybe playing RE7 with all settings maxed out, for about 15~30 minutes puts alot of stress on the newly acquired/installed CPU (i.e. 4790k). so I thought untill I get my hands on the aftermarket cooler, lets refrain from putting loads on it!.
To my surprise, system was restarted a few more times, when I was not playing, just running my tests which were mostly GPU extensive and not CPU extensive at all ( cpu temps were around 60~75 and rarely 80 at max)
This made me run RealTemp and log everything, after one of these crashes, I went to the logs and noticed the temps were all around 60, 70! (and gpu around 75, I have GTx980) ( I used 2 seconds interval to save logs).
Then I tried prime95 v28.9 (prime95v289.win64), and ran it for an hour and 08 (Its still being run!), temps reached 98, 99 on all cores and now they are between 90~99. and It has not crashed yet!!!

So What could be causing this sudden restart of the system ? Where what else should I look/poke into ?
Thanks in advance

 

Hard drive/ OS issue

a guy suggested :

• shutdown
• unhooked HDD
• restarted
• yay !!
• reconnected HDD
• restarted
• yay !!

also , try method 3
How to Unlock Drive in Windows 10: 5 Ways to Remove a Lock

 

PC is Suffering Unexpected Shutdowns

Most important detail to me would be whether these shutdowns are sudden, in which case it's likely a short or PSU issue (capacitor aging maybe?) or graceful windows style shutdowns, which suggests software interference.

It could also be overheating components if it's a sudden shutdown. What are your thermals like?