Last night I was trying to download Android Cyanogenmod 9 to my HP Touchpad and it failed. I pulled the USB cable out of my TouchPad and a big white USB picture appears on the screen and the tablet would not turn off, so I forced it to shut down. Now when I plug it into the charger the charging symbol does not show up. Also, when plug it into my computer it is detected, but otherwise does not do anything. How can I fix my tablet?