How can I do factory reset on Samsung Galaxy 10.1 Tab? After more evidence of my son breaking into my tablet (darned 11-year-old... going to be a true Social Engineer hacker, if I can't get through his thick head that he'll lose all computer privileges...), I changed the password this morning... and can't remember it now.

Unfortunately, after multiple failed password attempts, IT IS NOT ASKING FOR MY GOOGLE LOGIN TO UNLOCK. I don't seem to be able to get to the "failsafe" unlock mechanism any more, and so am looking to do a complete factory reset.

I've seen instructions to hold down the Volume-Up + Power buttons to initiate this (remember, I can't log in, so I can't do this from settings.) All that happens is that the tablet goes into a mostly-blank screen showing what is probably a newly-opened box, and a blinking Android that says "Downloading...". I let it sit for close to two hours in this state, and nothing. It did respond to a power-down from here, but just came back up to the password login.

What am I doing wrong? (Apart from choosing such a simple password as 10 U/L/num characters... obviously not sufficiently complex...).

Brian
If you were able to unlock the device, you would go to Settings ~> Privacy ~> Factory Data Reset &amp; follow instructions. Done!

Since you don't have access to OS, press and hold "Volume Down + Power" for 10 seconds. Screen will appear with standard Droid recovery icon. Select it with volume down key &amp; press volume up to enter. Now, you're in recovery mode from where you can factory reset your device.

Depending on your device sub-model, if its not working, try "Volume up + Home + Power" for 10 seconds. When something is displayed on screen,  release power button while holding other ones.

If this one is also not working, turn on device with power button and just after first display, press and hold "Volume up + Volume down" for 10 seconds.