I recently received a Novo 7 basic with cameras. It worked great for a few days, but suddenly would no longer turn on. It was as if the battery had died, but even after long periods of charging through USB or Power Cord there was no response. The unit didn't make any sound and the screen showed no reaction when the power button was pressed. Thankfully I was able to get the tablet working again, so here are the steps if it happens to you.
You need to press the reset and volume up buttons for 20sec. After that pressing the power button turned the tablet on normally.
Just reset or reset and power had no effect. Pretty simple fix, but nobody seemed to know about it.