Getting 'B4' When I Boot My Newly Built PC

[Buggu]

When I boot the PC I just finished building I get a little 'B4' in the bottom right corner. What does this mean?

 

[Mark_1970]

When I boot the PC I just finished building I get a little 'B4' in the bottom right corner. What does this mean?

What motherboard make/model? does it just hang there?

 

[Buggu]

When I boot the PC I just finished building I get a little 'B4' in the bottom right corner. What does this mean?

What motherboard make/model? does it just hang there?

Never mind! I fixed the problem.

 

[Mark_1970]

When I boot the PC I just finished building I get a little 'B4' in the bottom right corner. What does this mean?

What motherboard make/model? does it just hang there?

Never mind! I fixed the problem.

Moved the keyboard/mouse usb?