Windows 10 Technical Preview: Installing and test drive Build 9841
This is one of those annoying configuration screens, that doesn't really say anything. I presume Windows 10 is busy configuring the UI in the background, but all you get is a screen that changes colour occasionally, and informs your: "Don't Turn Off your PC". It takes a full six minutes before Windows 10 finally gives you the message: "Let's Start".
Download Windows 10 Technical Preview here >>