Dead Tablet

Upon trying to flash my tablet today, I booted up my tablet.
It wouldn’t boot up so I plugged it in, after plugging it in, it told me it had 100% charge. Therefore I had it boot up and I took the power source out. After it booting up trying to get to the unlock screen, it turned off. I tried to boot it up and it wouldn’t. So, I plugged the tablet back to the power source and got a red empty battery. Is my tablet battery dead or is it software?

Video of what occurs now: https://www.youtube.com/watch?v=mg_FB7Hh4Ts&feature=youtu.be

You said upon trying to flash your tablet.
Were you trying to flash an OS or the bootloader? Did this coincidentally happen just before then or after (or somewhere in between)?
How about trying to reflash the bootloader and see if that gets you anywhere?

After some playing around with the charging of the tablet, it’s finally working again. I guess it was drained pretty hard.