Hey Owelethu. For this to work, the device (the AG Chrome Selfie) must be on off mode or turned off in short. To do this, press and hold the power button until you get the menu you mention to get and from it tap Power off and then tap Ok. The device will then power off. At which stage you can then try the key combo (Power button + Volume Up...) as suggested. Another easiest method of setting the device on off mode is to open the battery compatment and remove and reinsert the battery - do not press the Power button afterward but proceed to try out the suggested key combo instead.