Wtf-glitch

That’s the thing I can’t update bios cause I only have 1 cpu and can’t open my bios also it is a ryzen 7 2700

So I am building a computer and I’m have all the cables plugged in at first I was getting no video signal so I took out my graphics card and still nothing now my system won’t power on yet my mother board still lights up and I’m so confused like I can tell I’m getting power to my mother board my parts will be listed below I very much appreciate the help and advice and ways to test this issue mother board: ASUS rog b450 cpu : ryzen 7 power supply: thermal lake 700watt Graphic card: geoforce 1650 hdd: 2 tb sea gate and a 256 ssd case: GOLDEN FIELD Z3