Weird Green Text When I Boot My PC

[darculldarcull]

When I boot my PC I am greeted with a box in the top right that is a couple of green squares , a few arrows and the letters K and R (or R and K) with also an open bracket [ ( ] and [ ! ]. The variation of this is different every time and only sticks around until I am done loading into windows. Right after this is done I hear beeps that I never heard before coming from what sounds like its directly from my motherboard, this has only started happening today and I'm not sure what the problem is. If you know anything that would be of great help.
Thank you.
-Dar

 

[Ralston18]

Please provided more system information.

Make and model motherboard, OS, CPU, GPU, etc....