Trying to fix an ASUS r556l computer that refuses to boot and is asking for a password. The user had created a password but it no longer works. This computer does not have a separate bios battery but I have removed the main battery to try and discharge any power from motherboard components hoping for total reset etc but its not looking like that will work. I've tried a few methods listed on line with no success. This is (or was) a rather new (17 months) good working computer and only needs to get beyond this problem. Surely someone somewhere knows how to fix this. Any and all suggestions will be gratefully appreciated. Many thanks to the 'system hero' who can assist me with this. This system is Windows 10.