Well, if you chose the type of reset to keep all your personal stuff on the tablet, that could be why it is stuck. That kind of reset won't remove anything on the tablet that should be removed (malware, bad apps, viruses, etc.) so you wind up with problems.
You can try turning it off and then starting it up in "Safe Mode" to see if it will load. If it will, then back up all your personal stuff (files, contacts, photos, etc., but not apps, can't back those up) and then do a full "Hard Reset" on the tablet. This will wipe everything and start it up like new. Then you can put all your stuff back on it.
To get into "Safe Mode" please do the following.
1. First turn off the tablet.
2. Next press and hold "Power" until you see the...