Since this is still flagged as unanswered and since your last name sounds vaguely familiar...
Reflashing the device is nothing to be hesitant about I've done mine myself a couple of times. Here is a guide for the process if your device is still having a problem....
[http://forums.androidcentral.com/google-nexus-7-2012-rooting-roms-hacks/191477-guide-nexus-7-factory-image-restore.html|reflash factory image nexus 7]
While tablets have gotten better in the last four years I still use mine to run my home brew home entertainment remote web page user interface. [https://timbocephus.blogspot.com/2016/01/revised-home-brew-remote-added-full.html|Home entertainment remote]