This is a common warning message which occurs with windows.
It normally means that you have at some time tried to burn files to a cd and for some reason it has failed.An easy way to get ride of this warning message is to go to the windows start button , open the run prompt and then type
shell:cd burning Then press enter.
This will open up a folder showing the files waiting to be burnt to the CD. Delete the files and then close the folder. This will stop the message from occurring again.