Question PC shutting down while gaming kernel 41 power error

[fluffi95]

Hello,
never had problems with my system since today

Gtx1080
ryzen7 5800x 3d
x370 krait gaming AM4
32 gigs RAM@3200MHz
650w be quiet power zone model Z1 - 650W
Bios Vers. 1.L6 AMD AGESA Combo AM4v2PI 1.2.0.A

It is shutting down while gaming after 10-15mins (GPU 80°C )
(CPU 70-80°C)
Temps didnt change, normal temps while under load for me.
Also tried GPU stress test which leads to the same problem after 10-15 mins
What I find strange is that CPU stress test runs since an hour without shutting down

When my PC turned off I cant restart, nothing is happening when I press the restart button - I have to turn the power supply off and back on to restart
No overclocking
Also tried underclocking RAM to 2666MHz just to be sure its not the Ram speed whatsoever - didnt change a thing

Do u think it is the power supply?
Need help pls

Edited some Hardware Infos

 

[Lutfij]

Welcome to the forums, newcomer!

650W power supply
650W is the advertised wattage of the unit. What is the make and model of the PSU and it's age? Make and model of your motherboard? BIOS version for your motherboard?

 

[fluffi95]

Welcome to the forums, newcomer!

650W power supply
650W is the advertised wattage of the unit. What is the make and model of the PSU and it's age? Make and model of your motherboard? BIOS version for your motherboard?

650w be quiet power zone model Z1 - 650W
Its 6 years old I would say (had years of just watching youtube so not everyday under load)
motherboard is x370 krait gaming AM4
Bios Vers. 1.L6 AMD AGESA Combo AM4v2PI 1.2.0.A