Few days back I observed that when I plugged my Nexus 7 for
charging it did not show me the white battery icon which denotes that it is
charging. Even after disconnecting and connecting the charger multiple times to
the tablet, it was not showing any sign of life. Obviously I was a little
worried and googled for any solution. I found that I am not alone and lots of
other Nexus 7 users have faced similar issue.
There are various blogs, sites on which you can find solution. Google also acknowledged and posted the solution on its support site:
Nexus 7 faces this problem if the battery
is fully drained and also remains in that state for quite some time (not always
the case though). I followed these steps and brought my Nexus 7 back to life:
1. plugged the tablet to its charger
2. pressed and held the power button for more than 15
seconds and booting process started
There
is one more solution documented on the Google support site (above link) for
this problem if these steps do not work.