Your already burnt cd is bad and cannot be made to work.
Whilst it is often possible to make a type of working copy of a securom 4.8x/5.x/7.x protected cd from a non-working copy, I'm not going to tell you how because-
[li]It's easier to do from an original.
[/li][li]You'd need another cd anyway.
[/li][li]Doing so would only promote piracy since it would only be in extremely rare circumstances for there to be a valid reason not to use the licenced original cd to make the back-up copy.
In short, as KitnaIsntHappy has advised, make a fresh back-up from your original cd.