I have the green screen also,I just recvd this info from place I bought it from will try it tonight,here is what he sent me what to do.
Steps to Reinstall the OS System for 10.2” ePad:
1. Make sure the ePad is powered off.
2. Simultaneously press and hold RETURN + HOME + POWER three buttons
(The RETURN button is on the right middle front panel – a big button you won’t miss; the HOME button is on top right of the ePad; and the POWER button is on middle of top of ePad)
3. Hold all the three buttons you will see 5 seconds countdown. Another 5 seconds count down. When you see a Mars’ picture, release your fingers off these buttons.
4. Then you will see four steps on the screen:
a. Reboot System Now
b. Apply SD card: update zip
c. Wipe Data/Restore Factory Reset
d. Wipe Cache partition
You will do b, c, d, a sequence in following steps.
5. Use + and – buttons on top of ePad to move the highlight to b. Apply SD Card: update zip. Then press MENU (on top ePad) button to confirm.
6. Again use + or – to move the highlight to c. Wipe Data/Restore Factory Reset. You will see a lot of “No”s and on “Yes”s. Move the highlight to the “Yes” and press MENU to confirm.
7. Then use + or – to move the highlight to d. Write Cache partition, and press MENU to confirm.
8. Last, move the highlight to a. Reboot System Now. And press MENU to confirm. Now the ePad will reinstall the system. You may need to wait for 4-5 minutes.
9. After the step 8 the ePad will ask you to recalibrate the screen. You will need to touch the target sign on the screen to complete the calibrations.
10. Finally the ePad will pop up some information. You simply click WOWHome. You will see the front page of the screen.
11. Now the ePad should work properly.
hope this helps someone