Its not so hard as u imagine! First step: unplug d system.Second step: uncover d system unit (cpu).Third step: locate a battery cal cmos battery, after that, remove d cmos battery from its panel, return it back in some seconds.Fourth step: plug ur system back, it wil neva ask of password again in its life. Note: the cmos battery saves time, date, password etc, so u will have 2 give it new time n date with password if necessary.