to reset bio's,, there is usually a jumper, next to cmos battery,you will see 1 pin exposed,take jumper off say pins 1 & 2 and place on 2 & 3, remove cmos battery, on some boards you need to short pins in cmos contact, when you remove cmos you will see a contact point, looks like mini fork,,just take screwdriver and touch both contacts at the same time, again, that is if there is no "clear CMOS jumper" sometimes just removing battery does not clear cmos,if you need help let us know.
Bd