Unlike similar posts about this issue, the light doesn't from green to red to nothing when I plug it in, but rather, it just goes to green for a few seconds, and then nothing. I hadn't used it in a few years, and I went to use it again and this happened. I'm using the nook brand block and cable. It is a BNTV400. holding the power button for 20 seconds, or any length of time does not turn it on.

The device won't power on. The screen and status light show no indication of activity when pressing or holding the power button (or any button / pairwise combination of buttons for that matter). The Nook HD+ (model BNTV600) has been unused for at least six months. It would not power on, so I presumed that the battery was simply dead and left it plugged in overnight to charge but would still not power on the next day. I suspect that it is not charging. When initially connected to a charger the light shows green for three seconds and shows orange/amber for three seconds and then remains off (there is a brief flicker orange/amber -> green at the transition between colors). The device was functioning normally before storage. I've tried charging with two different Nook HD+ -> USB cables and two different USB AC adapters and the behavior is all the same. Is this device completely dead? Are there any tricks to get this thing to charge / power on?

I've been try my hardest these past couple months to figure out a way to root my Device without a computer(Got wet in April) and no success. The problem is , my Device is a BN Nook HD and Unknown Sources is blocked since software version 1.4.1 . So I can't use Kingroot etc. and It appears I can't do anything without a computer. Any Help or Advice would be largely appreciated.

I love the option that your iPhone will wipe itself if someone preforms way to many pin attempts but I do not see that option on Android devices. Is there software that will completely wipe your Android device when there are too many pin attempts?

I checked The Master List of Rooting Techniques , and found nothing. This XDA thread looked promising.

I have a hybrid (root on SD) install of CM on my Nook HD+. I've decided I'd rather have it installed on the internal flash rather than on the microSD card. Can I convert this installation or do I need to just follow the install instructions again for a non-hybrid install and start over?

When I bought my Nook HD+ a week after Google Play was enabled for it, one of the first apps I installed was the Kivy Launcher. It worked great for a few times, then stopped working mysteriously - wouldn't even generate a log file. I finally decided to uninstall it and reinstall again. Now when I go back to the Play Store, it shows a message under the app icon: > Your device isn't compatible with this version. I have no idea why it wouldn't be compatible, since it worked the first time I tried it. Is it possible that B&N black-listed it? What other conditions would generate this message?