Burn Speed

My CDR can burn at 16 speed, however, in Nero V5.5, I can only burn at 4x and there is no other selection in the pull down list. I do not have this problem in the past only recently after a virus outbreak.

I have already tried reinstalling Nero, is there any other way to resolve this?

There is a utility on Neros site to alter what appears in the speed box. I found with 5.5 i had the same issues.