Hi !I just upgraded my newer computer changing processor from dual core to quad core.I also have older (6 years old HP)for my son.Since i have relatively new dual core processor E 7300(if i remember correctly) i wonder if i can use it in older computer just by buying another motherboard with 775 connector tipe for this chip.But what about BIOS .Where it stored and by simply changing new motherboard with chip I have what do i need to do else?