The Acer restoration CD maybe looking for a Tattoo on the hard drive. Quite a common trick by certain main stream laptop makers to do this so that only replacment parts supplied by them can be used.
The other option you have is get an oem copy of Vista or XP and use the key you have on the underside of the laptop to activate the operating system, then get all your drivers from Acer.
Thats what I did with my laptop, gets rid of that pre-installed unwanted software.