I was having problems when I did an update from Google, it kept popping up that the launcher would fail so I did a factory reset. When I did it, it said that the cache and data cleared but when I went to reboot it froze so I held the power for 10 secs to turn it off. When I turned it back on it was normal as far as starting up after a reset except it says my internal storage is full so I can't download anything. When I hold the power button to turn it off, the power off button pops up so I hit OK and it says it is powering off but that's it, it never does. You have to hold down the power button to restart it.Welcome to the forum
Could you provide us with a step-by-step. Something like I was having problems and did a factory reet and it started working/never worked but the touch screen does/doesn't work and when I try using the power button/or the screen to turn it off it doesn't work.