Hi,

If your Leapster does not respond to the stylus pen, it needs to be calibrated.

The following are instructions below on how to recalibrate the leapster.

1. Insert a cartridge, turn the unit on and wait for the sign-in screen to appear.

2. Hold down the Home, Hint and B buttons simultaneously.

3. When the screen changes, press the A button.

4. Using the Stylus, touch the center of the targets.

Thanks for using Fixya.