so i have a 2013 nexus 7 that i love i bought it with a mhl to hdmi adapter and i normally download movies and connect them to my tv so the family can watch movies ive been doing this for months and it always worked just fine but for some reason tonight my screen turned off and now it wont connect but it also wont turn on now before i connected the tab i saw it was a 97 % battery and i even connected it to a charger hoping to at least get the battery logo to pop up but nothing so im lost ive tried pressing power volume up/down to get the boot loader to pop up but even that wont work currently im leaving it charging to see if anything changes but i have no clue how to salvage my nexus help! :'(