Follow all the changes through listed at this Link:
http://www.mtu.com/upgrades/hoster/windows7-changes.htm
When you do the items from Microsoft. Go to it several times to make sure you get everything except hardware updates.
Some updates require another update be loaded first. That is why you see the Auto Update popping up several times.
Actually all you should have needed to do is load 4.22 and not have to reload any previous ones. Since you removed it from the computer before the Windows 7 upgrade that should have reset your registry code.