1. Power off Phone, press and hold the Volume Down button and the Power button at the same time until the device turns on.
2. Press the Volume Down button to highlight "Recovery mode"
3. Press the Power button to restart into Recovery mode.
You'll see an image of an Android robot with a red exclamation mark.
4. Holding the Power button, tap Volume Up once and then release the Power button.
5. Use the volume buttons to scroll to "wipe cache partition" and press the Power button to select it.
5. "Reboot system now" will be highlighted, press the Power button to select it.
Try to charge the device with it on, if no luck then try the following.
1. Shutdown you Phone
2. Charge till 100%
3. Use the phone till it shuts down completely during...