Can't do factory reset on Galaxy Tab 2 I can't reset my Galaxy Tab 2 to factory settings. I know that you can when turning it on but the problem is that I installed a sort of ios onto the device and have forgotten the password and it won't let me turn it off without being logged in, but I can't unlock it.
Please help
According to Verizon, if you cannot perform a factory reset from the Settings app, you can perform one by following these steps:


  
  Power the device off.
  
  Press and hold the Power key.
  Select Power off.
  Select OK.   Note: If the screen doesn't respond to input, press and hold the Power button for 10-15 seconds.
  
  Press and hold the Volume up key then press and hold the Power key.   Note: USB cable must be disconnected.
  When the Samsung logo appears, release the Volume up key and Power key.
  From the Android system recovery screen, press the Volume keys to select wipe data / factory reset then press the Power key.
  Press the Volume keys to select Yes -- delete all user data then press the Power key.
  Press the Volume keys to select reboot system now then press the Power key.
  Perform Initial Activation and Setup.
  


You can read more at the Verizon website (Tab 2 Troubleshooting: Hard Reset).