Downloading new drivers is not enough. You must install them also. But what makes you think the old driver stopped functioning out of the blue?

Go back to factory conditions. If there is no hardware issue, it should work again. And that means that if it doesn't work then, it's a hardware issue. Then let it fix under warranty.
If it's mysteriously solved by going back to factory conditions, better make a regular image backup to go back to if it mysteriously happens again.