i bought a laptop (neo) more than a year ago. reformatted my laptop more than 7 times. windows vista ang OS nko. but karon bag-o nko reformat. ika activate nko sa windows, mu suwat man xa "already in use" ako serial number sa laptop already in use. cant activate na my vista. ive called microsoft. kanang toll free... they cant help me man gali. wat should i do.?
HELP