Hello. I posted on here earlier that I am brand new to the mac world. I bought this one refurbished and there seems to be an admin password on it so I can't download or update anything. I read that I could hold Command S and load the single user mode to reset the password but when I do that my keyboard doesn't seem to respond so I can't type anything. I borrowed a copy of snow leopard so I am okay with wiping everything and starting from scratch. If anyone can advise it would be greatly appreciated. Thanks for your time.