I have a Compaq Presario CQ62-417NR and the hard drive crashed (error 303). So I bought a new hard drive and installed it correctly, but since it is blank I cant reach disk management to partition nor format the new hard drive. I have a windows 7 upgrade disc but do I need the windows 7 installation disc in order to make it work??? I am very confused and any help would be appreciated. Also when I try to install Windows 7 instead of upgrading it, it always get stuck on "expanding windows files 0%".