Why is my HTC One M8 stuck on the HTC One Boot Up Screen?

[AC Question]

So last night my phone was working completely normal. I went to use the flashlight app on it but it prevented me because the battery was too low on my phone. Moments later when I went to plug the phone in I noticed that it was on the HTC One Powered by Android Loading Screen. I waited a few moments but it continued to stay on that screen. I knew the phone was going to die so I waited about 10 minutes and when the battery died I plugged it in and left it plugged in, off, overnight. When I woke up in the morning to turn the phone on, it turned on but still was frozen on the HTC One Powered by Android loading screen. The phone is completely unresponsive, I can not access the boot menu. What is going on?