Hmm.... you're the first one to say this. But I have to admit, there are only a few people who have the external stuff as well... Someone has to be first..; I'm afraid this would be much too advanced, it would bring me too far to solve this. There can be sooo many causes for this. However, you could start with the following: use regsnap (or something similar) to make a snapshot of your registry when you're using the unattended drivers of my DP. After that, re-install Windows, and ONLY manually install the required drivers. Now take a snapshot of your registry again and compare them. Remove the irrelevant differences (like recent documents), and maybe (if you're lucky), you'll have the solution!