Question PC Randomly shutting down or restarting without any alert

[fillipo]

for these couple of weeks my pc have been randomly shuting down i checked the temprature and already changing my thermal paste into a new one but the error still acours, please help me solve this problem

this shuting down and immediately turning on happend not just when im gaming or on havy load but sometime i just browing and it still happend, and sometimes it just dont happend at all,
i check the temp this is when its just browing it around 37-40 and when havy load like gaming and opening other apps its can rach 80+C and the shutting down event sometime happend and sometimes not at all https://drive.google.com/drive/folders/1JW7JDuNnjG1PhfEkMHtRHIfX-tX1JE-v?usp=sharing i put event viewer so you guys can analyze what happend https://ibb.co.com/ScsTchw

please help this is my spec :
11th Gen Intel(R) Core(TM) i9-11900 @ 2.50GHz (16 CPUs), ~2.5GHz
AMD Radeon RX 6700 XT
Memory: 16384MB RAM
Available OS Memory: 16222MB RAM
BIOS: 2404 (type: UEFI)

 

[rgd1101]

brand and model of the psu?

 

[fillipo]

brand and model of the psu?

its corsair cv750