intalling windows 7

hi guys i have a compaq presario cq61  it came originally with windows vista

hard disk has been completly formated

i want to install windows 7

i have disk

trying to install in any partition but not possible

message says posible cause is hardware not got drivers for hd

can´t  get them

please help. sorry i am not advanced user...and my english poor but learnig

thanks a lot