bedectalf

Hi, my old Seagate 20GB hard drive has some important files. just recently i pluged it as a slave and it wont work. the BIOS didnt detect it then i noticed its not vibrating. i think theres no power supplying it. i checked the cables and it worked fine. i even tested it on other computers but still no use. if it is busted how will i recover the data files inside it?. thanks for any anwers