Performing a Normal (Soft) Reset on a Samsung Galaxy Tab GT-P7510

A normal reset is sometimes referred to as a soft reset. A normal reset stops all running applications but does not erase any programs or saved data.
Caution be sure to save any unsaved data before performing a normal reset since a normal reset erases all unsaved data.
To perform a soft reset:
  1. If your device is frozen and unresponsive, press and hold  for 8-10 seconds. The device will reboot automatically.
Performing a Hard (Full) Reset on a Samsung Galaxy Tab GT-P7510

A full reset is sometimes referred to as a hard reset. Perform a full reset when you want to clear all settings, programs and data from RAM. A full reset deactivates the battery the power button does not function until the battery is reactivated.
Caution if you perform a full reset, your Samsung Galaxy Tab GT-P7510 returns to its default settings and looses all information that is not recorded in ROM.
To perform a hard reset (Factory data reset):
  1. From a Home screen, touch  Apps >  Settings > Privacy.
  2. Touch Factory data reset, then follow the prompts to perform the reset.