If boot Android device into safe mode still can’t solve your system unresponsive issue, hard reset might able to help then. Yup, make your Google Nexus 7 (2013) like a new one by factory data reset. You will lose everything like installed applications, data, photo… But you will get back a perfect Nexus 7 just like a new one. So be sure to backup all your data before perform factory data reset.
