Question my pc freezes after running a game for 10 mins

[HyperNova22]

my pc

NVIDIA GeForce GTX 1660 Ti

Intel(R) Core(TM) i5-9600K CPU @ 3.70GHz

RAM 16 GB

windows 11 pro 64

when i start eve online i play like 5-10 min my pc freezes and my pc screen turn off but pc keep working in freeze condition it will work only after i restart my pc manual but when i play league of legend it work good its not only 1 game i tried total conflict resistance still the game and throne and liberty the same problem even when play on low states oh and my
NVIDIA GeForce GTX 1660 Ti is up to date

 

[rgd1101]

brand and model of the psu?

 

[HyperNova22]

brand and model of the psu?

i dont know honstly is there a way know ?coz the case hidden the psu and cant see it

 

[HyperNova22]

brand and model of the psu?

its stx 650w cougar

 

[rgd1101]

from 9 years ago https://forums.tomshardware.com/threads/cougar-stx-650w-80-plus-230v-eu-power-supply.2535280/

 

[HyperNova22]

from 9 years ago https://forums.tomshardware.com/threads/cougar-stx-650w-80-plus-230v-eu-power-supply.2535280/

what the ... is that why dxdiag when i try to click on display it close ?

 

[rgd1101]

malware scan the system?
is that windows 11 pro legit copy?

 

[HyperNova22]

malware scan the system?
is that windows 11 pro legit copy?

malware scan the system?
yes and i even reinstall a new windows 11
is that windows 11 pro legit copy?
y

 

[rgd1101]

do you have a better psu to test with?