Hi Derek ... Your friend that just got her preinstall is most likely was
done by the store , which is normal , again though if she ever needs to
reinstall windows or reformat , she going to need to use those license keys
numbers on the side of her computer to reactivate her windows ... Now your
other friend there , If he/she has a license copy of windows which wasn't
bootleg (copy ) , then he/she will also one day need to enter those license
keys whenever they need to reinstall or reformat windows but if he/she has a
bootleg , their been case where they don't need to ever enter those license
keys , again this type of version is illegal and it also doesn't have all
the windows files , which in some case might cause more problems then good