I think I just lost my patience with the Dell stuff installed that was popping up. Albeit not a lot installed but I'm just used to clean Windows installs with no bloat. I'll probably partition and dual boot 10 Pro sometime soon.
Just need to find a desktop environment that handles HiDPI screens nicely. Could do with some granular scaling.
I had to swap in old (& with bad sectors) hdd, format it and clean install 7 pro, then upgraded it to 10 whenever the rc came out. No dell cruft on board.