No, tablet computers store their data in Flash memory a type of electrically writable read only memory (a solid state replacement for harddisks with no moving parts to break). Flash requires no power to retain data, once that data has been written.
I have no idea.
To erase your Hudl tablet, go to the "Settings" app and scroll down to "Backup & reset." Select "Factory data reset" and then confirm by tapping "Reset tablet." This process will erase all data on the device, returning it to its original settings. Make sure to back up any important data before proceeding.
Go to Settings > Device Info > Erase & Deregister Device
yes it will
No.
Do you mean HOW TO ERASE or did they erase by themselves and you want to know why?
With a scan tool or by unhooking the battery.
diconnect the battery then connect it
No. Replacing the battery will not wipe the phone. Make sure the phone is off before you disconnect the battery though!
Nope
To unlock a frozen Coby 7012 Kyros tablet, try performing a soft reset by pressing and holding the power button for about 10-15 seconds until the device restarts. If that doesn’t work, you can also try holding down the power button along with the volume up button until the tablet powers off. If the tablet continues to be unresponsive, you may need to perform a factory reset, but this will erase all data on the device. Always ensure your device has sufficient battery before attempting these steps.
my brothers internal batterie has run dry and corrupted. its impossible to fix it, even if you erase your file.