Bios default password?

I had to restore Windows and I had to go to the Bios pages to set up the USB to load. While I was there I added a password. Then I immediately cleared the password. SInce then, whenever I try to restart the LattePanda I get an immediate password query. No matter what I enter I get an invalid password response. Now, my lattepanda is definately a brick.

My question is what is the password after it has been cleared by the Bios? There must be a default!

thanks