If BIOS is not showing on an external monitor while using a laptop or desktop computer, here is how to fix the issue. You might often need to change settings in the BIOS to make things work for you.
a monitor attached via VGA, above my desk; a monitor attached via DVI, at eye level on my desk; and a TV, attached via HDMI, across the room (it's a 25 ft. cable). The TV is used primarily for gaming, ...