Wrong Key Stuck In Door. This is the amount of time that the OS waits when a key is depressed before activating the key again. When a key breaks off in the lock most people go right for the tweezers.

Jiggle the key while pulling outward gently. Push the locking mechanism. When a key breaks off in the lock most people go right for the tweezers.
Other possibilities might be.
Do not reinstall the driver. Open the Control Panel then double-click the Keyboard icon. You can also take out your key from the lock in the door by aligning the tumblers inside the lock by doing so. Excessive twisting and prying at a stuck key could take a situation from bad to worse.