Yes, YOU USED A HOOKEY DISK
if you purchased a genuine key, why not just reinstall from the original genuine DVD that the genuine key was stuck to?
If you install from a bootleg/pirated/cracked disk, you will be loading non legit software, i.e rootkits, trojans, virus's etc along with modified windows core files.
Why would you install off a hookey disk with a pukka key, doesnt add up!