do you have a burner/cd writer/dvd writer? make a copy from the originals using nero, sometimes you can copy a scratched cd and it will work. I did this and it worked, installed from copy, still have the originals in nice condition. I do this to most of the more expensive cd's so i don't scratch them. Also I found a cd compound that fills the scratches and you leave it for a minute, then taking a lint free cloth remove it from center of cd out to the edge, once the cd is nice and shiny and no compound is left behind you try it. I was able to find the compound at my local dollar store