Some users may find trouble opening the Mail,Calender and People app in Build 10041. Apparently down to a licensing issue Microsoft have blogged a solution here (it works too):
Link Removed
Also see here for screenshots...
I have an issue with getting a completely black screen. I never see a desktop. I never even see the login screen. If I press the sleep button on the case, then start it back up, I see a mouse pointer too. But on first boot, there is no mouse pointer. Booting in safe mode has the exact same...
When changing file ownership to allow me access to a hidden log file, something happened that removed installed apps from the app store. They are not on the start menu, nor are they shown among "All Apps". I did some digging around and managed to find the folders these apps are stored in, but...