[SOLVED] PSU problem?

[PobesneliAbortus]

I've recently bought new MB(ASRock B550 Steel Legend) to replace my Gigabyte A320m-h MB. As of my CPU, it is R5 3600 and my GPU is XFX RX 580(8gb V.). When I connected everything(and I did it correctly), my PC didn't boot(it was blinking CPU and RAM, fans, LED, CPU and GPU turning on and off). After searching forum far and wide, I decided just to try and boot system without my graphics card, and then it booted(obviously I couldn't see anything, since I didn't have any form of GPU), with VGA blinking. So, my question lays simple(and probably it is stupid, but I jast want to confirm it), is the problem with my PSU(and before ya ask, yes I did connect 24pin and 8pin(4+4) correctly), which is CHIEFTEC GPE-600S(600W 85% eff.), and do I need to change it to stronger one?

 

[Vic 40]

Might well be psu, Chieftek usually don't have good quality to offfer with psu's so advice is it'd be good to upgrade to something better.