Question pc

[miswrote1]

The fans are all working properly and all the temperatures look good but the pc shuts down after playing a game for 5 mins and reboots.
Specs:
z390 gigabyte motherboard
gigabyte RTX 2080
32gb RAM 3000Mhz
i7-9700k
750W psu

 

[Lutfij]

Make and model of your PSU and it's age? You should ideally list your specs like so:
CPU:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:

Which version of BIOS are you on for your motherboard?