If Bluetooth driver is missing or gets removed after a Windows Update, add the legacy driver from the Device Manager, install the correct driver from your manufacturer, etc.

Repeat delay: Controls the time delay before a keystroke repeats when held down. Repeat rate: Determines the speed of repeated keystrokes. Press the Windows key, type Device Manager, and hit Enter.

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 ...