|Ohhh, your trying to get the restore off the external, now this makes sense. |
Well, I do hate to say it, but.. if it's not reading the image file off the external and there is no built in restore options, you need a new operating system. Did you check on the boot of the computer to see if there is a partition used just for restoring the computer?
If your all out of options here, check out newegg.com, they have OEM versions of operating systems you can get for $120.
I hope I helped.