In a stunning freak accident, my processor, video card, wireless card, motherboard and media drive all died in my home computer. I've been running Windows 10 since release and was specifically dreading this day. Windows 10 uses online activation, similar to Windows 8, but with the caveat that an upgrade from Windows 8 leaves you with no valid Windows 10 product key. The activation is tied to your hardware, so changing out the motherboard and CPU will cause an activation failure, and that is exactly what happened, after I finally got the hardware back together. This post details the process I took to get back to an activated legal copy of the software I paid for. It was frustrating and painful but ultimately resolved. You'll want a fast internet connection to do it, since it requires a lot of downloads.
Silicon Valley Dad, who loves cars, cooking, clothes and cameras