Hello, I have a Dell Inspiron 17 (5000) And I decided that I want to use the pre-installed Windows 8.1. So I bought a Windows 7 Ultimate 64x and tried to install it in the BIOS I set everything I had and started to boot from the CD. In the installer I deleted the old disks and create new, everything went without any problems then the system has been installed and began to guide the first run, which I filled, but in the end me waited unpleasant surprise. System wrote "Bad initialization." I repeated the process twice more, but it to me not write error and immediately shut off. Sorry for my bad english. Thanks for answers.