Question Boot loop, no display signal, mouse, keyboard


Apr 6, 2019
Hello! A few days ago I bought the following parts:
  • AMD Ryzen 5 1600 AF
  • ASRock B450M PRO4
  • G.Skill Aegis 16GB DDR4 3200MHz CL16 1.35v
I also had the following parts from my old PC:
  • Sirtec High Element PLUS 500W
  • GIGABYTE GeForce GTX 1060 Mini ITX OC 3GB GDDR5 192-bit
So I've put them together and surprise. Fans start spinning for 20-30 seconde and then they stop for 2-3 seconds. And all this goes in loop. All this time, my display is not showing anything, neither my mouse or keyboard works (not even the lights on them don't start). However, if I test the USB ports with an USB fan, it works. Also, there is no beep from the motherboard when I start the PC.

I tried swapping the RAM sticks or just with one of them but the problem persists. Then I thought that maybe it's the PSU so I swapped it back into my old PC and it works. The only difference is that on my old PC I use the 4PIN CPU power connector instead of the 8PIN.

Could it be an incompatibility between my PC parts or maybe the problem it's a faulty part? Can you please help me with any advice or maybe you have any idea what might be the problem.