Why is the touch screen not responding?

If freeing up resources and re-initiating your tablet didn't solve its touch issues, then you might need to open it up to take a look inside. It may be that the connection between the screen and the tablet's motherboard is a bit loose and simply needs to be re-seated. If these symptoms began after a drop, or after the tablet was exposed to water, you may need to replace the LCD display. You can head on to your tablet's troubleshooting page for more info on this matter.