Unfortunately, I have a serious problem because my computer is crashing. After a one-hour session in the game(Civilization VI/Total War 2), a black screen appears on the computer, and fans on the graphics card accelerate to 100%. The monitor shows no signal and the computer is still walking. After the reset, the computer does not get up, black screen / no signal. Helps the button on the power supply. After turning the computer back on, it turns on normally. Please help or is the power supply or graphics card? I apologize for my English, if there are any mistakes, but I do not speak fluent English.
GPU: Gigabyte RX Vega 56 gaming
PSU: Corsair RM 750
Motherboard: MSI 970 gaming
Memory: G.Skill 2x4GB 2133MHz cl9(work 1866MHz cl8)
SSD: Patriot Blaze 240GB
Windows 10 Pro 64 bit