Windows 7 to upgrade or not to uupgrade? tech support question

[saperzaper]

hi, i have windows vista home premmy and my computer is a custome built hp(hewwit packard or what ever) and one of the fetures on my computer is when i reboot the computer i have a option to restore it to factory condition it is a full wipe im not sure if it has to do with the partitions but my question is if i upgrade to windows 7 will i later be able to restore it to factory condition vista?

please if you can reply it will be alot of help

thanks again.