I posted this on Reddit and Tom's Hardware too, but the problem is not fixed yet.
Ryzen 5 2400G (RX Vega 11 iGPU)
G.Skill Aegis 16GB 3000MHz 2x8 DDR4
Mobo ASUS A320M-K
BIOS: 4207 (former 4011)
Hello people. So, I have green screen crash or reboots when gaming/benchmarking for about 20 minutes, especially when running Heaven Unigine benchmark. I don't think it's PSU failure because everything was working perfectly fine before I updated BIOS and MAYBE, but MAYBE because I installed new RAM. I won't be too long. Things I have tried:
Clearing CMOS multiple times
Switching RAM sticks
Tried downgrading the BIOS (failed, mobo doesn't support USB flashback, error "Selected file is not a proper BIOS!" in EZ Flash 3)
Reinstalling Windows 10 multiple times
Installing newest chipset and GPU drivers
Clean uninstalling GPU drivers with DDU in safe mode and then reinstalling the newest drivers normally
Clean installing GPU drivers with AMD Cleanup Utility
Turning off D.O.C.P and setting manual timings, frequency and voltage
Turning on D.O.C.P Standard
Underclocking to 2933 MHz
Overclocking SOC voltage to 1.15V (it was on 1.062V)
Overclocking RAM voltage from 1.35V to 1.365V
Overclocking memory frequency to 3200 MHz in hope it will be stable
And yeah - Myself sitting in front of the monitor for 4 days, 8 hours each trying to solve this problem.
Is there any hope? I don't want to buy any new components for now, I spent a lot of money on this PC in hope to play some games and relax, but then this happened. I appreciate all the answers and thanks in advance.