So there is a CD drive... Removing the password from BIOS could be an option to the hardware way then. That is if you can remove all batteries from the machine and the mobo.
(SAMInside is not a "poor l0phtcrack clone", I think Zone-MR refers to marcovalerios post claiming that. Just mentioning this in case you go for my first suggestion. Of course there also are other usable tools.)
Can you change the view settings to show all files and not to hide the protected system files?
(You'll need to get to the folder: windows\system32\dllcache)
Dave