Using the Media Tool has failed 3 times in a row and WU still has nothing.
Try to download the ISO File and make a bootable USB with Rufus or Universal USB Installer
I would make a DVD instead. I don't like using USB.
The Media Tool failed 6 times. Even after disconnecting all drives but the main one, disconnecting the printer, turning on Cortana and location services, and getting the mic working with Cortana. Every time it did the same thing. It got all the way to the part where it says "Your PC will now reboot in a few seconds", and then goes back to the desktop with a small window saying "Something happened, Windows 10 installation has failed".