Why won't my Lenovo tablet turn on?

Hello! I bought a Lenovo IdeaTab a little over a year ago, and it has been working fine throughout that time, save for a few times when it froze and I had to reset it. But, a couple of weeks ago, the screen froze and I could not turn it off, so I held the power button down for a little while and waited for it to shut down. When it finally did power off, I waited about five minutes and tried turning it back on, but it would not power on. It didn't do anything, so I thought No big deal, this has happened a couple of times before. I held the reset button, which had worked all of the other times, but it still would not turn on. Since then I have tried everything; charging it and then holding the power button for twenty seconds, and then unplugging it and holding the power button, I also tried that with the reset button, but to no avail. I've tried holding the power and reset button at the same time, plugging it into my computer, using a different charger, taking the battery out and putting it back in, basically everything I found online. I don't know what else to do, please help.