Windows 10: Pressing 1 will decrease volume, and pressing b will increase it

I'm just minding my own business and then suddenly my 1 button will decrease my volume, b increase it and evertime I press shift it'll type ~Anything I can do to fix it? Theres no problem when using on screen keyboard

:)

 

Volume increases and decreases by itself while listening to music on Lumia 520

I purchased Noika Lumia 520 7 days ago. Whenever I listen to music the volume increases and decreases by itself and volume keys don't work at that time. I am facing this problem for last two days. Volume suddenly increases or decreases by itself. Please
suggest solutions.

 

Increase/decrease volume controls by 1 instead of 2? (win 10)

Is there a way to stop windows 10 volume control settings via keyboard commands from increasing and decreasing by 2 numbers. Instead, by 1 ?

 

My volume lowers whenever I press space, and increases whenever I press numlock.

I have no clue why this is happening. I've had my keyboard for a few months and now, today, my volume will lower whenever I press space, and increase whenever I press numlock. In addition, my multimedia keys are messed up. Pressing the volume up button increases
sound but also turns on numlock. Pressing volume down will add a space if I am typing or move my page down if not typing (like spacebar would do). So, it seems that volume up has somehow become bound to spacebar, and volume down has become bound to numlock.

Any clue how I can fix this? Is it something wrong with windows or my keyboard?