Nokia Lumia 928 reset

A factory data (hard) reset may help with a blank or frozen screen, apps crashing or freezing, keypad/touchscreen problems, can't hear, device making noises, can't make or receive calls, and device won't sync.
Perform a factory data reset only if absolutely necessary as it removes all data including:

• Microsoft® account
• System and app data
• App settings
• Downloaded apps
• Media (Music, pictures and videos, etc.)

An alternate reset method is available if the device can be powered on and is responsive.

1. Ensure that the device is powered off.
2. Press and hold the Volume Down button (located on the right-edge of the device; above the power button) until instructed to release in step 4.
3. Press and hold the Power button until the device vibrates (approximately 2 seconds) then release.
   Alternatively, connect the device to an approved USB charger while continuing to hold the volume down button.
4. When the restore screen appears (exclamation mark), release the Volume Down button.
5. From the restore screen, press then release the following buttons to initiate the reset process:
   1. Volume Up
   2. Volume Down
   3. Power
   4. Volume Down
   Allow several minutes for the process to complete (rotating gears appear on the display to indicate that the reset is in process).
   To setup the device after the reset has completed, refer to Initial Activation and Setup.