Huawei MediaPad M3 hard reset
To get into Huawei MediaPad M3 recovery menu:
1. First Power off your Huawei mediaPad M3 tablet.
2. Press and hold the the Volume Down + POWER keys together for about 10 seconds and recovery mode will appear.
or from menu
Restoring your HUAWEI MediaPad to its factory settings erases all your personal data, including information about your accounts, your system and application settings, and your installed applications. Before restoring factory settings, back up the important data on your HUAWEI MediaPad M3.
1. On the home screen, touch Settings (Gear icon)> Backup & reset.
2. Touch Factory data reset and follow the onscreen instructions to back up data or directly restore factory settings.
Huawei MediaPad M3 Andorid
If your tablet is responding to screen input, then open Settings from the Applications menu. Tap Backup & reset > Factory data reset; click Reset tablet and then Erase everything to format your MediaPad.