1. Make sure the pens are fully charged. Push the pens all the way into the charging doc until they light up.
2. If your pens are charged, it may be a connection issue. You may need to re-sync the board to the computer by pressing the blue light on the receiver on top of the board, and then the blue light on the receiver on your laptop.
3. If your pens work, but are "jumpy" or inaccurate, you may try re-calibrating the board.
a. Make sure the grey receiver is plugged into your laptop.
b. If the wireless was removed from the top of the board, make sure the black USB cord is plugged into the laptop.