HP Touchpad CMx will not charge (bricked) solution
After many successful upgrades to Android I finally got the kiss of death. The battery died and it would not recharge. After many hours of research and trial and error I was finally able to get it charged again. I had read to let it sit for a week and let it totally discharge but me impatience wouldn't allow me to. The fact is it was a week before it would charge so get your patience slippers on and relax while nature takes its course.
To prevent this from occurring... Always use the HP charger or Touchstone...it puts out a higher voltage then regular chargers. Make sure yours is working.
Try the following in order
1) Hold the POWER, VOLUME + AND HOME buttons down at the same time for 15-20 seconds while being charged (hard reset)
2) Hole the POWER and VOLUME + button while connected to a PC that's on.
If it still refuses to power on:
Let it sit or you can spend a week pushing the buttons with no results. After the weeks penalty box, One I simply placed on the Touchstone and it began to charge. Another I put on the Touchstone and to the USB charger at the same time and it began to charge (removed the USB charger.
Moral to the story, be patient, put the touch pad away for a week while you order the Touchstone charging dock.