Hisense Roku TV is not turning on (as if it's unplugged)

I woke up tonight and saw that my TV was off however the red light was not showing on the bottom left corner as it would when it’s usually off, from there I already knew something was wrong. I don’t think this is a display situation, it seems to be off and unresponsive as if it were unplugged, I tried unplugging it for awhile, I tried a reset method someone mentioned to hold the power button for 15 seconds on the remote while the batteries were gone, as well as trying the reset button on the TV itself and nothing works. Any help and/or explanation?