Acer G520 series manual What happens at system reset

120		4 BIOS setup
Jumper Name	Pins	What happens at system reset...
Password Clear	6-7	If these pins are jumpered, administrator
		and user passwords will be cleared on the
		next reset. These pins should be
		jumpered on 5-6 for normal operation.
BIOS Recovery	10-11	If these pins are jumpered, the system
		will attempt to recover the BIOS by
		loading the BIOS code into the flash
		device from a floppy disk. This jumper is
		typically only used when the BIOS has
		become corrupted. These pins should be
		jumpered on 9-10 for normal operation.
BIOS Select Jumper [J29]
Operation	Pins	What happens at system reset...
Normal Boot	1-2	If these pins are jumpered, the board will
		boot off of either BIOS (bank.0 or bank 1)
		depending on which is available first.
Force Boot	2-3	If these pins are jumpered, the board will
		boot off of bank 0 BIOS.