lets try this next...
Please press the windows key on your keyboard , hold it down, and press R
Type in devmgmt.msc and press enter
If it asks to open, click yes.
Then, you should see a list of devices installed on your computer..
Double left click the cd dvd drive choice to expand it ... Then..
right click on each listing inside the cd dvd section..
And click uninstall.
Once uninstalled. restart the computer, ( it will automatically reinstall your cd drive )
Go to the link below.http://support.microsoft.com/gp/cd_dvd_drive_problems
on the page that comes up. click on the green run now box.
It will start a file download ( this file is perfectly safe as its directly from microsoft)
Once you download the file, make sure to run the file..
It will run a dignostic program that will attempt to repair and fix your cd drive so it can work properly with itunes.
Once both of these steps are complete, test itunes again.. Can it see and use your CD drive now to burn music.. And if not, what is the exact error messages that your now getting, word for word.