press a letter won't show up

[XxRektBoss]

When I type, nothing will show up, example if I press "I" it won't show up. I know for a fact my keyboard is not broken. I been trying to look up ways to fix this problem so far I didn't find anything helpful. I was just playing some minecraft until my keys were acting up. Please respond back

 

[Reynod]

Try another keyboard to help isolate if that keyboard is in fact the issue.