Question How to fix Pc crashing and power cycling

[Luminosity 77]

I was playing valorant and my pc suddenly shut itself in the middle of the game and when i tried to power it on it power cycled. i'm pretty new to pcs and i've never encountered this sort of problem. I did replace psu recently because my old psu was failing and i think that's not the problem i tried reseating both of my rams which miraculously turned on but still crashed and power cycled i don't know what the problem is can anybody help?

My specs are
Cpu:Intel i3 7100
Mobo: h110m4-c2h
Ram: 2*4gb hyperx fury 2400mhz
Hdd: seagate pipeline hd st3500312cs
Psu: ygt top one ky-750atx plus-II

 

[Eugene$$]

ygt top one ky-750atx plus-II

replace that psu to something better