Windows needs to be restarted so necessary changes to system files can be made before continuing?:
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I was testing out the upgrade of a Vista on a HP laptop. Took a backup so it can be rolled back to the original image and had previously downloaded the VL media from the MVLS web site. I wanted to try an inplace upgrade. Started to install it and it kept insisting that I needed to reboot. No matter how many times I did, no go. Googled and saw that others were hitting this too. While in some cases the upgrade could be continued if you uninstalled Nero, in my case, uninstalling Roxio still didn’t fix the issue. I ended up booting from the media and doing a clean install that moves the original vista install over, but when you start to try to do inplace upgrades, remember that ultimately at the end of the day, clean installs are the way to go.
Sometimes you just say “oh heck, I’ll do clean” and go on with life.