Question Pc only boots after i turn the psu off and on again

Apr 23, 2019
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I built this pc one year ago and for some reason it is power cycling , it boots only after i restart the psu.
Specs:
Asrock b350m pro4 mobo
Ryzen 3 1200 cpu
Corsair cx 450m psu
Corsair vengence 3000mhz 2x4gb (operating at 2133mhz)
Wd blue 1tb hdd
Gigabyte Gtx 1060 3gb
Case aerocool aero 500
I have tried booting with one stick of ram with and without the gpu but it didnt work, i reseated the cpu (it had no bent pins), i reseated the mobo, checked the psu on its own and it s ok, unplugged everything extra from the board and tried again but still. I also removed the hardrive but again no boot to bios. Got an internal speaker but beeps constantly even when the pc boots normally. Any suggestions?