freeze

it does not go past the two guys on the broomstick leaving the screen on the right handside. i can not see tablet contents when plugged into laptop. there does not seem to be a reset button, or is there? but where? how to wipe and reset this tablet so it can be used again? it is only a few...

So I got a Sony Xperia Tablet SGPT121US and an Android Dell Venue 8, and they all get the same problem: boot loop stuck on logo screen. I have tried to at least factory reset and wipe data on the Sony (which run Android 4.0) through the Recovery mode but to no avail, the same thing keep...