Hi, my brother got a new PC and while connecting stuff i got some problems. Q-LED on startup light on white, after a while light on yellow green. No signal. Keyboard reacting on and instantly reset PC. GPU doesn't give signal on both dedicated and integrated. I checked CPU power cable, it's correct, i check ram in my own PC as well, i check power. Also tried to reset CMOS battery. No result. I'm totally clueless what to do. Please help.
Q-LED (CPU [red], DRAM [yellow], VGA [white], Boot Device [yellow green]) Q-LED codes here
ASUS PRIME B560M-A
SilentiumPC Supremo L2 Gold 650W
Crucial Ballistix Red 16GB
Intel Core i5-11600K