I am trying to install Windows 10 home 64 bit and it's not installing. I set up my computer correctly because it boots up and everything, I have a 2tb HDD and 1tb SSD with an ASUS DVD drive. I wanted to return the disk. When trying to install win 10, it says at a point "Windows cannot install required files. The file may be corrupt or missing. Make sure all files required are available and restart the installation." What exactly do I do to return it and get a refund? I ordered through Amazon.