Windows 10 up and running, no major hassles so far, just updated a few Alienware drivers.
Will start installing and testing astro programs soon, wish me luck...
Col, mine is an Alienware 14, lots of grunt, 16 GB of RAM

I plan to install a SSD next and then migrate the OS over. If I manage to get a Win 7, I will install it on the HDD so I have dual OS to boot from, that's the theory anyway....
Bo