Help can't do a complete pc restore!

My hard drive crashed recently after upgrading a couple months ago from
Vista to Windows 7. Prior to the hard drive crash, I completely backed
up my pc to an external hard drive. As soon as I had a new hard drive in
the pc, I restored everything. I was hoping it would restore the OS as
well but I'm back with Vista, what I had before I did the restore. Is
there any way for me to find out if my external harddrive does have the
files to reboot Windows 7? I have a "windowsimagebackup" folder in my
external harddrive that I can't view. Could this be the files needed to
restore Windows 7?
Thanks in advance


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manutdcronaldo