Try these steps: - Power off your notebook - Once you`re sure it`s off, press and hold volume up, volume down and power button simultaneously. (hold those 3 buttons at the same time) -
Once you see the backlight turn on, release power button but keep holding volume up and volume down. - After a few seconds Recovery will appear, you may now release volume up and down buttons. -
Then scroll to the menu using volume up and down - Choose wipe data/factory reset - Confirm the command using power button - Choose "Yes" when "Are you sure?" appears - After seeing the word "Done", choose "Reboot recovery now"
did that work for you?
Please let me know if you need more help.