Tried the link, but the search didn't find Cdr4_2K.sys or Cdralw2k.sys

I used cCleaner to get rid of anything relating to Adaptec, and found over 20 entries - all of which I deleted. And I still get the warning on boot up.

I didn't go back to a restore point to before I installed CD Creator, as I couldn't remember how long ago I installed it. From vague memory, sometime before Christmas.

I will uninstall any other copying programs I have, to see if this stops the warning.

So I am open to more suggestions.