How to disable Sticky Keys prompt
We've all been there: you're playing a game and after pressing Shift multiple times, you get a popup about "Sticky Keys", similar to this one:
 
This is how to stop the popup from showing up ever again:
- Press Windows key + R, type incontrol access.cpl, and then press OK  
- Inside the opened up window, press Make the keyboard easier to use  
- After that, press Set up Sticky Keys  
- Uncheck the Turn on Sticky Keys when SHIFT is pressed five times  
- Finally, press OK and close the window