Laptop doesn't properly work anymore

[DUCK_Me]

Well here we go, i booted up my notebook as normal, worked on it then decided to play some games. In the middle of the gaming session i was thrown back to windows lock screen. "Odd" i thought, logged back in aaand... got sent back. Not even full password written i got a black screen. Though this one was very odd. The laptop lights and keys stopped working, as if not even the power button worked (i tried holding it down for 10 or more seconds). The laptop seemed like it shutted off, yet i could still hear the fans working. Then for the next 3 hours it was just a nightmare, a laptop would boot back up, work for 40 seconds and throw that "black screen" with nothing working again. I tried shutting it down and accessing BIOS, nothing, BIOS was not opening.  THEN after like 4 hours from the start i got an update option in windows updater. Something along the lines of "install repair version" so i did. And now we are back to the current time. After i updated the laptop's windows or something,  Laptop now works, yet if i launch i game it works for like 2 minutes and then throws the special black screen again, though this one is shorter and the laptop functions normally after i sign in. It also happens after GPU exceeds like 60 degrees Celsius. 

Drivers are all up to date. I did stress test CPU, it's holding up fine. (Haven't stress tested GPU yet). NOW i can access the BIOS, though before i couldn't. The laptop is not overheating, windows was up to date before this whole thing.

What is this and what do i do? I am totally lost. (written on 28.9.24)

Edit (29.9.24) I tested the GPU more and it seems its the issue? I installed MSI afterburner and checked the GPU temp in games, yes, after the GPU reaches 56-60 degrees Celsius, i get the black screen. I tried reverting to older NVIDIA drivers, nothing changed, tried to switch drivers from gaming to studio, similarly, no change, what do i do now?

Also i tested the CPU, it holds completely fine. In CPU-Z benchmark AND stress test (for a minute) no issues.

Another Edit: The laptop seems to be doing some strange things now? It can launch and play SOME games like RDR2 and Minecraft without crashing. THOUGH it seems like most of the load falls on CPU? Because it gets to like 80-90 degrees Celsius and the GPU stays at 30-40. And the fans don't seem to ramp up like they did when the laptop was new, when a heavy game like RDR2 was launched on it. So..strange 

[Nal_NR · Accepted solution]

Hi @DUCK_Me,

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Fabulous analysis. Spectacular diagnosis of the issue before posting. Kudos to you for that.

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