Hi I just bought a laptop with vista installed, but it comes without a backup vista disk, and I am kinda woried in case in the future I get a bad virus that I can't get rid of, and I have to format the drive I have no vista disk to put a new operating system on the laptop. What i would like to know in is there any way I can back up the operating system on my laptop onto a disk, so that I can then install it again? if so how do I get the serial number of the system that is now installed on my laptop, because a new edition of vista probably costs more than that laptop did