your answer guys is a loose screen ribbon takes about 10 seconds to fix… here is the youtube video. once you tighten that screen ribbon back in line make sure you disconnect the battery ribbonand push the power button for 10 seconds to kill all power residing in the tablet. put the power ribbon back in put the back back on and hey presto you can boot up a working TAB A 10.1 :) https://www.youtube.com/watch?v=XDrhbTwd...