[SOLVED] pc reboots after 15 seconds

[Marijn2241]

so i built my fist pc but when i turn it it reboots every 15 seconds, its like a reboot loop......
also a strange thing is that only the cha fan 1 and the cpu fan 1 are working.
things i tried: different ram slots, other cpu cooler, checked every cabel.
pc specs:
asrock b450m pro4 clear cmos
corsair 2x 8 gb 2666 mhz
amd rx 5700
ryzen 5 3600x
kingston ssd 480 gb
cooler master mwe gold 650

thank you in advance
for helping me

 

[R_1]

How To - "No POST", "system won't boot", and "no video output" troubleshooting checklist

"No POST", "system won't boot", and "no video output" troubleshooting checklist This checklist is a compilation of troubleshooting ideas from many forum members. It's very important to actually perform every step in the checklist if you want to effectively troubleshoot your problem. 1.Did you...

forums.tomshardware.com

this is the no boot troubleshooter. step 17, what is the speaker doing?
if you need you can make a speaker for testing
canned diagnostic speaker rant: speaker making 101
The diagnostic speaker is the motherboards main diagnostic feedback device.
the motherboard may be telling you where the problem is.
my speakers have this plug
http://images.crutchfieldonline.com/graphics/infolib/homelib/hSpeakerSpringClip.jpg
I use lamp wire but any stranded wire will do. literally any stranded wires. strip one end like so
http://www.antiquelampco.com/Shades/CordColors.jpg
attach the stripped end into the speaker spring clips on the speaker.
the other end of the wire should be trimmed like so the semi strip
https://wesbellwireandcable.com/images/cutwire.png
by doing a semi strip the wire case is now the socket.
plug one wire to the first pin, and the second onto the fourth pin.
power on the system and listen for beeps
end canned rant