I got a new laptop today and rather than reinstall Windows, I just took the hard drive out of my old laptop and put it in the new one. I was able to download all the necessary drivers for the new laptop through Windows Update, but I am not sure what kind of system files (drivers, etc) are hanging around on the hard drive wasting space or even if Windows is still trying to use them somehow.
How can I clean up whatever system files are no longer needed from the old hardware?