In order to hard reset a Asus M310, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Asus M310 device will be brought back to the default configuration of a brand new device.
1. Press and hold down the Power key to switch on the device.
2. Next things to do are to tap Start and go to Tools.
3. Select Default Settings.
4. Enter the 1234 confirmation code.
5. Tap OK to confirm the operation.
6. Well done! You have just performed the hard reset operation.