atouch tablet "unfortunatley launcher stopped" ?

[AC Question]

it's not letting me use any function...

 

[B. Diddy]

Welcome to Android Central! What's the exact brand and model name or number? Does this persist after a reboot? If you can't get to the power off menu, try pressing and holding the power button for 15-20 seconds until it forces a shutdown. Then power up again and see if the problem persists.