I have many old PC games that I bought on disk. Lately I have been trying to install and play them on my Lenovo Y510p. When I bought the laptop I went for the SLI option and therefore do not have a disk drive. I bought an external drive (Samsung) that plugs into my USB port. I can open the games and install them but when I attempt to run them they say that they cannot find the disk. I have so many awesome games that are not on steam that I want to play but cannot.