Windows 10: My right and left arrow keys on my keyboard have stopped working

I have a samsung galaxy book go with windows 10 on it. I'm only having issues with my left and right arrows keys, the up and down arrow keys are working fine.

:)

 

down arrow key stopped working

My razor lycosa down arrow key decided to not respond at some point today. The other ones work and so does the numpad arrow if i turn off the numlock. Sounds like its just broken and im screwed, but any suggestions?

 

Left/Right Arrow Keys and my Delete Key Not working

My left and Right Arrow Keys and my delete key does not work I have had some luck with CRTL and ALT keys with my left and right arrow keys but now that is not working it stopped working around Last June and has been fiddling with it stopped working with
the last update around June

 

Win Key + Left/Right Arrow keys no longer work

This is super irritating, as it was my favorite Windows keyboard command. I'm going to hold off upgrading my work PC until I can find a fix. Anyway, I have a clean Win 10 install here at home. It used to make windows snap to the left or right of the screen
if I pressed the windows logo key plus either left or right arrow key. That functionality all of a sudden no longer works. It's been a few weeks like this. Oddly, Windows key and up or down DO work.

1) Yes my arrow keys all work. Just tried it. Also I've been using them in games.

2) It's a USB keyboard (Das Keyboard to be precise)

3) I'm on Win 10 pro

4) If I drag a window to the left or right of the screen, it'll snap in the manner it should if I pressed Win key + left/right

5) This is a desktop

Not sure what else to try or why it just randomly stopped working but it's my favorite shortcut.