Recovery is included on a separate partition from the main Android OS on all Android devices.
You can boot directly into recovery mode and use it to factory reset the device, delete the cache partition, or apply software updates.
It can help you fix your device.
1. Reaching Recovery mode is reletavely easy just follow these steps, press and hold power button to turn off your device.
2. Now proceed with Volume Down + Home button + Power button held at the same time.
3. You can let go off the buttons if you will see the LG logo on your screen.
4. Now wait a second and you should see on your screen Recovery Mode menu.
5. Good job! You can use Volume buttons to move here and Power button to select option.