STEP 1
Check that the keyboard in powered on. Switch is located on the back of the keyboard with a red or green indicator for off or on.
STEP 2
If there is still no activity from the keyboard after switching on please replace the AA batteries with new ones. Batteries can be found in the storage compartment where the keyboards are located.
STEP 3
Check that the appropriate keyboard is being used for for the right computer. eg If you are using the keyboard for NUCC1 use the screen that should be displaying NUCC1. Check that the SOURCE for the screen relates to the keyboard you are using. eg HDMI 1, HDMI 2 etc.