Hi all, Dave here. I am trying to diagnose a friends tablet. I don't know whom manufactures it, it has no visible markings, just 2.0 megapixel. it is an android operating system. tablet tries to boot, then just shuts off. when I was in it, it was slow and locked up often. When I got it, the screen would flash the android splash screen. it would do this for hours on charge. it took 2 days to get to 80% charge. held power and vol up, or down, don't know which actually worked. next screen was just the word android, then it shuts off. hold power button for 5 or more seconds, same routine. I repair pc's in my spare time, and this lovely piece of work is pretty alien to me. I think the operating system was 22.214.171.124 or something along those lines. Glad I don`t own one.