Odin Mode should not be involved when you reset it. Sounds like something was hit incorrectly. If you chose to do just a normal "Factory Reset" which allows for leaving your personal stuff on the tablet, then this may be part of your problem. Where as a "Hard Reset" wipes everything.
First, try turning off the tablet and then turn it back on. This may well resolve your issue. If that doesn't work, then I would suggest the "Hard Reset".
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"...