Have you tried writing to them? If it is just the leballing and you find you can write then not so much a problem. If you find you cannot write to them try removing them from the device list, rebooting and see if Win 7 detects and re-installs the drivers for them.
Have you performed the standard upper filters / lower filters fix.
Your CD drive or DVD drive is missing or is not recognized by Windows or other programs
Might be worth a try.
Having followed the instructions in the link and opened the series of sub-items in regedit you should see something like the attached in which you should see the entry for the upperfilters which you need to edit as described.
View attachment 17633
ok, i found it and deleted it but there is no difference.I am not finding it.