I bought this hp pavilion g6-2269wm with windows 8 on it. Downloaded windows 7 ultimate and put it on a usb to downgrade and moved all the bios so it would work. When i got to the partitions window i deleted everything without backing up anything. Now all i get is "setup was unable to create new system partition or locate existing system partition" or "windows cannot be installed on the disk" some please help me!