I recently got a copy of windows 8.1 Pro, and was installing it on my grandma's computer when my power went out. It was halfway through the installation process when my the power went out, shutting down the computer as it was almost done with the beginning loading screen (windows logo with the loading circle). After the power came back on, I took out the disk, and attempted to install it again. But something weird happened. As I was making a password, the screen faded to black, and presented me with the beginning of the customization part again. So i did it again. This time I was successful. However, after about 3 minutes on the desktop, it did the same thing, but this time it shut down. Now, when I try to turn it on, I am greeted with the windows logo and the loading circle, with the words "diagnosing PC", followed by "attempting repairs", and finally, "Startup repair could not repair your pc." when I use the wipe option to attempt to reinstall, I'm using the original install disk, and it says not valid. Does anyone know what is wrong and how to fix it? This is, for the record, not and upgrade, but an original install.
Thank you
Thank you