Black screen, 5 flashes fast, 3 flashes slow coming from caps lock.

I go to turn my Hp x360 2-in-1 and I get nothing but a black screen. The power button is white. The caps lock flashes 5 times slow and 3 times fast…. I have disconnected the battery, realigned the RAM, and have tried going into the BIOS page but nothing is working…. I have read that it may be a BIOS issue or a motherboard issue…. Is there anything else I can try??