I just got a ssd and a few other new components. I read that I would have to deactivate windows on my hdd before I install it onto my ssd. What I did was deactivated it from my hdd and I got a message saying it was deactivated... then i Installed my new mobo, cpu, and just plugged in my ssd... I put in the start up disk and put in my product key which i deactivated from my hdd... I went through the start up and everything is working fine so I decided to reboot and plug my hdd in... I booted to windows with my ssd in prioriety in the bios and I did some internet browsing. but just a few minutes ago i was brought to a settings menu saying that I have to activate windows and when I go into system and under windows acivation it says windows is not activated. Apparently it says the key has already been used....