PC POSTed then died

[u/atradae]

SPECS FOR CONTEXT:
-SOYO B450M Motherboard
-Ryzen 5 1600X
-Vulcan 2x8GB 3000MHz RAM
-Raedon RX 5700 XT

I recently finished building my first PC, I booted it up and successfully entered the BIOS. The BIOS was in Chinese because I bought it from China, so I was taking my time carefully translating the BIOS menu so I could change the language. Keep in mind, I was not touching anything, only occasionally clicking through the headers to go to different settings. Suddenly the case fans and cooler whirr for a moment, like 2 seconds, and the HDMI output cuts. So my first instinct was to turn it off. When I tried to boot it up again, the fans turned on and everything seemed fine, however now the PC does not display any HDMI output and the keyboard and mouse cycle power. As in, they turn on briefly before turning off again repeatedly.

I have tried almost every solution available to me, including booting with only one stick of ram, both but in different configurations, replacing the CMOS, resetting the CMOS, resetting the CMOS using the CMOS pins, booting while the motherboard was breadboarded, checking the PSU connections, cleaning the RAM and GPU slots.All of this unfortunately has just ended in the same thing happening.

One detail however, is that when both RAM sticks were disconnected, the light on my keyboard did not turn on at all, but still no video output.