Windows 10: my keyboard just suddenly stop working but my niece was pressing random buttons

Hi i was wondering if anyone could help me fix this issue of my keyboard not working i had my niece around and she was pressing random buttons and im not sure if that was the case but suddenly the whole keyboard doesn’t work now i cant press anything and it hasn’t been damaged by water or food could someone please help me please and thank you im also not sure what window it is

:)

 

random keyboard keys stop working?

i went out today and everything was fine, i come home and three random keys stopped working, maybe more i havent noticed yet. the three key on the left side of the keyboard not working, the left shift stopped working, and the enter key stopped working, but the one on the numpad works fine. no one was home to use it, nothing spilled on it, i tried it on another computer and same deal. im gonna go buy a new one tomorrow but it makes me sad cause i loved this keyboard lol, microsoft ergonomic 4000. ill probably buy the same exact one if its in stock tomorrow, this one lasted or 4 years about. im just confused why three random keys spread out stopped working at the same time...seems very weird

 

PrtScn Suddenly Stopped Working

I've had my Surface 2 for two years. To save a screenshot all I ever had to do was press the PrtScn button. Suddenly, today, it's stopped working. A quick Google shows people suggesting that I use the Windows button in conjunction with the PrtScn button,
that works... but doesn't solve the issue really. Why has a process that's worked flawlessly for two years suddenly stop working?

 

Volume changes at random when pressing numbers on keyboard

As it stands from what I wrote in the titles.

The volume have suddenly increased or lowered for whenever I press a number on my keyboard (1, 2, 3, 4, 5, 6, 7, 8, 9, 0). I have yet to find the solution to this problem, but I believe an update ruined the connection between the windows and my keyboard on laptop/spare keyboard.

There are no shortcuts and there is nothing I particularly press for this to happen. I play games, I draw and tend to press the numbers from time to time when need to. I do not want the volume to change at random, and it does it at random. When I press a number - say 4 - it does it from time to time and not constantly from each button press. It is working at random and is horrendously annoying.

Is there a setting I have to change?