Computer crashes whenever I open any relatively intensive game

Device name DavidsComputer
Processor Intel(R) Core(TM) i7-14700K (3.40 GHz)
Installed RAM 32.0 GB (31.7 GB usable)
Graphics card NVIDIA GeForce RTX 5060 Ti (16 GB)
Storage 373 GB of 1.82 TB used
Device ID 9E61AA93-C0F6-4B92-934D-A09008060E59
Product ID 00342-21094-38944-AAOEM
System type 64-bit operating system, x64-based processor
Pen and touch No pen or touch input is available for this display

Hello, I've been having trouble with my computer for going on 3 weeks and it has been the worst. I just want to play my games in peace but its physically impossible for some reason It been the same pattern one day 3 maybe 4 weeks ago I was playing deadlock and my monitor simply went black both my display got disconnected there was feint audio but I assumed it was a 1 time issue restarted my computer then it went black again now immediately when I rejoined the game and then I restarted again open deadlock and it goes black like all of my monitors disconnect instantly. The same thing happens whenever I launch any game and it infuriating. I went to a local shop they factory reset my computer reinstalled my bios drivers I install all of my applications It works for maybe 5-10 minutes then the same pattern. Okay so I call cyber power they make me do this test check my cpu oh my cpu and it was under warranty so they gave me a better one (my old one was a i7 -13700k) cool so I wait 2 weeks get it changed factory reset ddu unistalll my drivers it works for 2-3 hours and then it happens once and then continuously my monitor will go black whenever I launch a game. It got so bad that my computer could not even launch into the OS it instantly sent me to repair mode I couldnt even launch my computer in safe mode. So, I call CyberPowerPC they dont know what to do and my computers not in warranty but they recommended I go to microcenter. Which is 4 hours away from me I go there they say I have to reinstall my OS and my old graphics card (NVIDIA GeForce RTX 4070 Ti ) was the problem. I spend 1000 changing my gpu reinstalling my OS and then another 4 hours driving back up to test it because apparently, they couldn't test it there because they couldn't download everything because they wanted me to set up my OS whatever I don't care I just wanted my computer to be fixed. I spend 3 hours downloading everything setting up everything I play it works for 2 hours and then it happens again once I call them, they tell me to ddu my drivers because I can't just drive up and down up and down. It works for 6 hours I go to sleep wake up use my computer for 8 hours and now it does not work again. It even did the thing where I couldn't even fully launch into the login screen again, I had to reset it to a previous update and still I can't play anything. Even if I uninstall my drivers, I just want any semblance of guidance I just want to use my computer.

Go to ---Task Manager>Startup Apps ---and disable all non Microsoft Apps.
Then do a Power off shutdown,wait about 1 minute then restart
Is the performance now normal?
If so then open one of the "intensive"games.Does a crash still occur?