It sounds like it got 'stuck'. Try turning it off and then back on and see if it will go direct to the software or not.
If that doesn't work, try restarting it in "Safe Mode" and see if it will go through. If so, then there may be something on the device causing the problem.
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 manufacturers logo on the screen, then release the power button.
3. "Quickly" press "Volume Down" and hold it for few seconds until you see the message "Safe mode: ON" or something similar.
4. If you wanted disable it, simply repeat the steps above, and you should see "Safe Mode: OFF" rather than on.