moto, Sony Xperia Z1 will not power on. Check the attached links,instruction and guides, Good luck
I hope this helped you out, if so let me know by pressing the helpful button.
https://talk.sonymobile.com/t5/Xperia-Z1-Z1s/Z1-won-t-turn-back-on/td-p/390335
https://www.youtube.com/watch?v=DU2u0ISzTzs
http://www.smartmobilephonesolutions.com/content/sony-xperia-frozen-will-not-power-on