In very rare circumstances, a SimplicityTouch Panel may fail to boot and display the following message:

"Warning: during operation, do not power off!", 
"If you use a USB flash or SDCard, do not unplug!", "Operation failed!"

Fixing failed boot message

1. Using the remote control, press the "OK" button 2 times consecutively. You may need to try this a few times to get it to register.
    
2. Once you do this correctly, the panel should reboot and work properly.

If none of these solutions help resolve your issue go ahead and submit a support ticket: Click Here