[Q] Nook HD+ won't turn on, tried everything topic

I was using my Nook HD+, when the screen suddenly showed lines all across it and froze. I had to push down the power button for 8 seconds to shut it down. Then could not turn it on. Tried all possible combinations, power, power+n, power+n+volume up keys for 5 seconds and for 30 seconds each time. Still not turning on. I tried plugging it in (although it had about 40% charge left before the screen froze) and noticed that the charging indicator glows green. If I push down the power button for 8 seconds, the light goes off, but if i press the button again, it comes back on. I've tried all the methods I saw on internet, except for draining the battery because the post suggested keeping it in a fridge, which I'm hesitant and also not in a position to do. Please help guys. I'm at a total loss.