Well it depends on if you did the "Factory Reset", which allows you to try and keep your files, or the "Hard Reset" which totally wipes everything. The former will leave any problem on the device if say it had a bad app, virus, malware, etc., it won't get rid of them. The latter should. I am including the steps for doing a "Hard Reset" just in case.
NOTE: Doing this will clear 'all' the data on your tablet, so it is suggested you not choose this option unless you have to, or aren't worried about losing anything on the device.
Be sure you back up any data you want to keep, to a computer or cloud account, before doing the reset.
To "Hard Reset" the tablet...
1. Make sure that the tablet is actually powered off.
2. Remove your SD...