Looks like al never got an answer to his question about how to do a hard reset for his Tab 7.0. Since the device is still around and every now and then there are some questions that pop up about this, the answer to this 7 yr old question is:
Ensure the device is powered off.
# Press and hold the. Power / Side and Volume Up button
# From the Android Recovery screen, select. Wipe data/factory reset. . Use the Volume buttons to cycle through available options and the Power / Side button to select
# Select. Factory data reset
# Select reboot system now.
# For completion sake only instead or archived