Leapster gs photo screen is green

How can I reset Leapster GS

did you try removing the batteries & replacing them?

I would try resetting it. You could also try calibrating the screen. The GS screen has a static orientation, so this seems like a very odd problem.

Leapster Explorer or LeapsterGS Explorer screen is not responding to the...

You have to make sure it is compatible. There are different types of Leapsters. Leapster 1 and 2, Leapster GS, Leapster Explorer and Leappad. Take it back to the store they may give you a refund or store credit.

Here's a link to their customer support and FAQ page:
http://www.leapfrog.com/en/pages/support.html

SolutionIf your Leapster system does not respond to the stylus pen, it needs to be calibrated. To calibrate your Leapster system:

1. 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.

stacyl316, thank you, your solution worked perfectly!

To open the battery compartments firmly press down on the arrows with your thumbs and push it out. You should feel the cover unlatching as you firmly press down and out.

CALIBRATION - summary of hints from here that eventually got our circa 2007 green leapster's screen recalibrated - in no particular order: 1) "home+hint+B" to get started, 2) "A" button next, 3) cleaned dirt from the gap between the plastic and the screen all the way around with a toothpick (seemed to be the KEY ELEMENT to get everything else to work), 4) be patient and keep trying until you see the targets - the first one should appear in the top left corner while the text is still on the screen, 5) if it doesn't work just right the first time try again, 6) unit should beep each time you press a target center.

Hi, have you tried to recalibrate the screen as in your instructions?
Make sure you have no game inserted
Press and hold down the 'on' button and 'hint' button (with questionmark on it) at same time until a menu appears on screen
Press A
Now touch all the little crosses with your pen that appear on the screen
switch leapster off and restart
if still not working, repeat above