Computer is asking to pair a bluetooth keyboard I dont have?

I cannot access my macbook air with OSsierra because it is asking to pair a bluetooth keyboard. I am aware that this computer is starting to degrade (I have had it for almost 7 years), but I really need to access my files. I am not sure of the issue at all. plz give me some ideas. Cant even boot because it gets stuck asking for a bluetooth keyboard (already connected a mouse in the usb)