Need help with risk previously found on cd rom

I need help with a risk that was found a cd. A nokia modem driver file contained the virus W32.Mixor!inf. This file was copied to the cd when I copied some files to the cd. Popped the cd into another machine and Symantec reported the virus. Removed the cd but Symantec now keeps on reporting the risk on the d drive (cd rom) and obviously the cd is no longer in the machine. Did full scan on machine and no virus on machine, just this anoying reporting from Symantec.

 

Symantec Corporate version 10.2

Vista Business