My daughters leapster 2 screen wont work, the pen isnt the problem as I tried to use my other daughters pen and the screen still didnt work. It isnt freezing up, just wont let us touch anything. The buttons all work fine though. Any help?

SOURCE: the touch screen does not work on leapster 2

Turn off the Leapster2 and remove cartridge (if there is one).
Push and hold down the hint button (the one with the question mark) while the game is off.
Turn the Leapster on while still holding down the hint button until you see the calibration screen.
Push the "A" button to enter the calibration.
There will be a little plus sign. Touch it with the stylus and continue to touch the plus signs with the stylus until you return to the calibration screen.
Turn the Leapster off and then back on again without a cartridge. Login as usual.
If this does not work, then call customer service, depending on how old it is. I've had ours for over a year, and this still works each time.

SOURCE: My Leapster 2 comes on, shows the name on screen

Answer
I had the same problem and here is the answer I found at leapfrog.com which fixed my daughter’s disney princess leapster 2’s problem. Good luck!
If your Leapster2 does not respond to the stylus pen, it needs to be calibrated. Calibrating the Leapster2 is easy:
1) Ensure that a cartridge is not inserted
2) Hold down the Hint (?) button while turning the unit on. Continue to hold the Hint button down until the LEAPSTER menu appears.
3) When the LEAPSTER menu screen appears, press the A button
4) Touch each of the crosshairs that appear with the stylus
5) Restart unit

SOURCE: leapster will not recognize the pen ...first it

I'd like to emphasize on Quebol96's instructions to hold down the hint (?) button at the same time that you start the power up mode..if you wait till the screen starts up it doesn't work. Others were saying to hold down the home, hint and B button and that wasn't working at all for me.