Why is my screen unresponsive?

Not sure if I have the right model as I can’t get it on to look. My Kindle won’t respond to touch. When it first comes on — sometimes — I can manage to turn it on by swiping, and other times it doesn’t respond to swiping. If I do turn it on, after the next touch it becomes unresponsive. I’ve rebooted it, recharged it, allowed the battery to go dead and then recharged it. I connected it to my PC and was able to get in and make one touch and then it went unresponsive at all. I really enjoy my Kindle and would like to get it running again but have no idea what to try next. Tia.