Google ASUS Nexus 7 Tablet (7-Inch, 32GB) 2012 Model (Certified Refurbished)
Performing a factory reset may take some time, so make sure that you plug your device in to a power source before you start. If your tablet becomes unresponsive at any point during these steps, you can restart it by holding down the Power button for several seconds. If your tablet is on, turn it off. Press and hold the Volume Down button, then press and hold the Power button at the same time until the tablet turns on. You'll see the word "Start" with an arrow around it. Press the Volume Down button twice to highlight "Recovery." Press the Power button to start Recovery mode. You'll see an image of an Android robot with a red exclamation mark and the words "No command." While holding down the Power button, press and release the Volume Up button once. Press the Volume Down button twice to highlight "wipe data/factory reset;" then press the Power button to select it. Press the Volume Down button seven times to highlight "Yes - erase all user data;" then press the Power button to select it. After the reset is complete, press the Power button to select the option to reboot your device.