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#11
I know this is no help whatsoever but fwiw, I've not been able to get 10 to install and run correctly on my Dell Vostro (originally W7 Pro). I don't know why, I've tried more than once using clean install and upgrade routes and nothing works successfully. The upgrade took 7 or 8 hours of churning away (I could tell a process was locking it up at 100%CPU but what can do you) and when the desktop finally appeared everything was clunky, slow and unusable. So I'm sticking with 8.1 which runs like an absolute dream with sub 15 second start times.
I know its no help but I've seen Dell mentioned more than once over issues like this. Maybe some weird driver issue...