Having trouble installing Windows 7 from DVD, most of the time, when I get to the install window, the keyboard and mouse won't work, making it impossible to continue installing. I have tried different bios settings, changing ports, changing from 2.0 to 3.0, I was able to install Windows 8.1 on a different drive, I have read somewhere, that it would work but you have to retry it 4-5. There does not seem to be a bios update. Any suggestions?