Computer doesn't boot past bios

Apr 27, 2018
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Hello,
2 months ago i build my ryzen 5 1600 machine,
about a week ago i turned off my machine and it didn't wanted to boot even to bios.
i tested every part of machine and same thing happens now on 2 different mother boards with ryzen 5 1600 and 1 with intel i3, 2 separate power supplies, 3 dims of ram drr4 (1 old and 2 brand new) i tested even different power switch.

Does anyone have any idea what can be happening?

also pc booted to bios couple of times and restarted itself, now exactly same thing happens. fans spinning lights up but no other response, if there are any beep codes there is either 1 long like it's starting or none at all. same on all 3