I can't turn on my Tablet

I was playing a game called Summoners War and I left my tablet for a couple minutes. When I came back, it was off. I just assumed it had gone to sleep mode after being inactive for 3 mins. When I tried to power it on, it just flashes and doesn't turn on. I hold the power button, and it just flashes a couple times then turns off. I just press and release, and no response. I didn't drop it or anything and I have no clue as to why this could be happening. It's a blu touchbook 7.0 Phone/Tablet.