Question COMPUTER TURNS ON AFTER SHUTDOWN

Feb 7, 2020
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As stated above, I recently completed my new build and have had this problem since the beginning of it. I have tried literally almost every bios setting and windows setting and I am just so confused. Only way it will stay turned off is if I hold down the powerbutton for a hard shutdown. Can anyone give me any tips or is my MOBO a lemon?
PC specs
z390 Aorus pro wifi
i7 9700
trident z 16GB 3200 Mhz
gtx 1050ti
hyper cooler 212 black edition