Ok. Got a new computer for Christmas. Built it. No Operating System. It's ok. I got a free code to use Acronis True Image to transfer the OS from my moms computer (Windows 7) to the SSD on mine. I use it. I put in my SSD. It seems to work. I take my SSD out of her comp and put it in my computer. It doesn't load windows. Says "windows failed to start a recent software change might be the cause".