When the Leap Frog Leapster screen stops responding to the stylus, it needs to be calibrated or reset. Pressing the right combination of buttons will correct the problem in just few minutes.Continue Reading
Insert a cartridge into the Leapster.
Turn the unit on and wait for the log-in screen to appear.
Hold the Hint, Home and "B" buttons down at the same time.
Press the "A" button when the screen changes.
Touch the center of the target that appears with a stylus.