What bios version do you have? The 3700X uses a newer bios than the 2400g.this happend after i changed my cpu however i changed it back to my old but its still the same issue, i tried cleaning the ram and cmos but still the same thing pls help (cables and the monitor is fine) and i plugged the cable into my gpu not the cpu.
Tried doing that didn’t workTry putting the old CPU back in and do a clear CMOS before you power it on.
I’m pretty sure I tried it on another pc and it was working fineBut are you sure that the cable is fully functional? it could be that the cable is broken.