I'm sorry about the issue. Did you make sure the key F Lock is turned on, then check?
Note: the key "F Lock" is located next at the top, next to to the key "Print".
- If needed, make sure you have installed the software Mouse and Keyboard Center and/or software IntelliType for your keyboard:
, and if needed, try the key F Lock again to turn on the function keys (F keys) and check.
If that still does not work, was there any trouble installing those software? And do you have windows xp, vista, or 7 or 8 or 10?
When you are available, please reply at the box below to continue troubleshooting. Thank you.