You can try resetting it first without using a computer by doing the following:
Power off your Tablet.
Press and hold Volume up and Power button at the same time until you boot into the Android system recovery. ...
Choose Wipe data/Factory Reset with your volume keys and then press the power button to confirm.
Power off your Tablet.
Press and hold Volume up and Power button at the same time until you boot into the Android system recovery. ...
Choose Wipe data/Factory Reset with your volume keys and then press the power button to confirm.