It was an upgrade and yes I checked before that my system was a 64 bit. I also have a product key that I already entered when first installing windows 8.1. My system worked when I first migrated it but only when I rebooted did it get a blank screen. Was I supposed to have a clean hard drive...
I recently installed windows 8.1 from 7 and the installation process was smooth and seemed to work just fine. However, once I shutdown and booted up again I got a blank screen right after the windows logo appeared. I can change the volume and brightness at the blank screen but not anything else...