Say your (much depended-upon) backspace key is getting slower and slower. So you search online, and learn that you can go into your Start Menu, then your Control Panel, then your Keyboard settings, and change the response on the keys to “fast.” And you do that (or anyway you leave it at “fast” when you see that it’s already there, and you also change the repeat delay to “fast.”) And it doesn’t help. And meanwhile, other keys are starting to be very sticky and slow to respond. It’s taking you ages to write a sentence, because the keys’ response is so slow that you don’t see your mistakes until you’re far past them, and then it takes forever to delete back to the mistakes and start again.
Obviously one solution would be to never make typing mistakes, but that’s not going to happen (because you’re me) and anyway even without the mistakes, those slow keys are making you want to scream and hit someone. Because typing freely is like life’s blood to you.
In that case, you might try changing the keyboard’s batteries.
PRESTO! Now you can make typos and delete them to your heart’s desire. Life is good again.