Sound video and internet

Question

sir i bought laptop compaq presaro f700 with windows vista but i remove and install windows xp but all function are not working which drive is having with computer and i saved that at external hard disk but later after format that drive progarmm just support for vista so i am getting problem for other devices coprocesso,network controller,other pci bridge device,pci device,sm bus control,unknown device,video controller{vga compatible}