Nero may have its place, but MS recommends using ISOBuster or Active ISO Burner. Both of these are in fact free to download and to use. Go to tucows.com to get them or perhaps another program of your choosing. I used Active ISO Burner with its default settings and burned DVDs for both the 32-bit and the 64-bit versions of the RC. They clean installed without incident, each on its own partition. This doesn't rule out a hardware problem, of course.