In our description database there are 2 solutions for performing hard reset for Nokia Lumia 830.
Choose the first method and follow the steps to perform a hard reset. If the first solution does not work, try the next method.
Please remember! Hard reset will delete any and all data your device contains; like pictures, contacts, messages, apps etc. Everything. Nokia Lumia 830 device will be brought back to the same configuration as that of a brand new device.
1. Press-hold the Power button until the phone turns on.
2. Open Main Menu. There, select Settings...
3. ... then About...
4. ... and then Reset Your Phone. Well done, the phone should now reset, completing the process.