if there isn't a recovery disk then how about checking for a restore partition on your HDD.
restart of F2 before windows starts logging on. At the very bottom of the DOS like window, there should be an option and I've forgotten what it states exactly, but if you will move the down arrow to get there, push Enter and you should see a Menu of thing you can ask the machine to do for you. System Restore, current configuration, and what you want. Restore the system to factory specs