PC crashes after 30 minutes

[Tischling]

Since today my pc crashes after nearly 30 minutes completely, even the hard shutdown doesn't work. The USB Ports don't get power anymore, monitor went black and Ethernet lamps in the Port went also black (seems that all back IO doesn't work). All fans and the harddrive are spinning during the crash. I suspect that the CPU shut down, cause the cooler get cold pretty fast. GPU, Mosfets, North- and Southbridge Cooler are after a few minutes in the crash still pretty hot.

 

Temperatures befor crash are all fine.

 

 

Specs:

Mainboard: MSI 970 Gaming

CPU: AMD FX 8320

RAM: 4x4 Corsair LPX

GPU: MSI Radeon RX 570 8G

PSU: Corsair CS650M

[Benx]

It might be a bad power supply or mobo. Do you have an extra power supply to try?

[Tischling]

12 minutes ago, Benx said:

It might be a bad power supply or mobo. Do you have an extra power supply to try?

Not at the moment, but I can get one at the weekend at my parents house.

 

Tried to let my PC do something, cause the original 30 minutes were on idle/surfing/watching videos and if i play some games it only keeps about 10 minutes up.