Starting just tonight, my tablet's been automatically starting and stopping music as well as going to sleep. I have never had this problem before and it seems very unpredictable. I'm running Android version 4.4.2 and I've already tried the only thing I could think of; Charging it and enabling never sleep mode but that didn't even help. Any ideas what I can do about this?
Welcome to the forum You post begs more questions than answers. Are you rooted, ROMd, what tablet? With the problems you describe it's possible a factory reset would be a good solution.
Welcome to the forum. +1, try a factory reset. Add Apps back one at a time as it could be an App causing the problem.