Now, that Win 10 has been out for a day for the general public, I would like to know what you think so far. Ok, here are my first impressions: I installed Windows 10 over an existing and used installation of Windows 7, which worked remarkably easy. I kept all my programs, documents and so on. The installation via update didn't work (gave an error code), then I tried the method via command line, which worked only up until the download was finished. After that failed I used the Media Creation Tool, and that finally worked. From then on the installation was pretty fast, including the download it took me less than two hours. After everything was finished, Windows 10 started without any problems, but I couldn't get into the internet anymore. My WLAN dongle simply doesn't get recognized correctly anymore (it shows up, installs correctly and even is seen as working but it simply won't find any connections). I tried different drivers, the one that came with the dongle, the one that came with Windows, nothing works. The dongle itself is fine, it works perfectly on another computer that is still on Windows 7. So time to get my old powerline addapters again. Now my internet connection works aswell, and after removing that annoying Cortana search field and Microsoft Edge from the task bar and some mostly useless apps from the computer (seriously, Solitair is now only ad-free if you go premium?), I am pretty happy with Windows 10. Oh, and the calculator still can't do the math, just try 2+3*4 and you know what I mean.