Hard Reset LG P990 Swift

Press Power button to switch off device.
Press and hold Volume Down and Power button.
Release keys when LG logo will appear on screen.
You will enter the Android system recovery menu.
Use Volume Rockers to navigate on wipe data/factory reset and press Power key to select it.
After the data wipe is complete, press the down Volume Key to scroll to reboot system now and press Power key to select it.
Done device is ready to use.