motherboard not working

I built a pc about a week ago and I play a lot of rhythm games but mostly osu! and I have noticed that the keyboard acts up. My mouse feels amazing so its not just a general problem. I don't know the best way to explain it but when I tap the keys at a certain speed they kind of just glitch out...

So I’ve recently purchased brand new parts to put together a brand new pc and when I tried to post my mobo is telling me I have a problem with my cpu and ram I’ve tried switching the slots for the ram and trying one ram at a time...same problem. My specs are: Ryzen 5 2600 Rtx 2060 super...