If your keyboard keys stop working, it doesn't necessarily mean they're broken or need replacement. From checking keyboard ...

Whether work has you glued to your computer or you're an avid PC gamer, it doesn't get much more annoying than having a stuck key on your keyboard. The problem usually arises from a dirty keyboard, ...

Before troubleshooting the problem, make sure the issue isn't hardware-related. Keys may stop working if they're stuck, physically damaged (such as after a drop), or if the keyboard connection is ...