Installing itunes disabled DVD/CD drive

I installed itunes on my PC running XP windows (Packard Bell iMedia M866).
On my first run itunes would recognise a CD inserted into the drive. When I closed it down and reopened, the computer would not recognise anything put into the CD drive anymore.
I uninstalled Windows media player, thinking that would be the problem, but it did not help. I later reinstalled Windows media player, but it still does not work.
Now my computer will not recognise any CD put into the CD drive. A CD icon does not even appear in the “My Computer” window, when inserted.

If I click on “add hardware”, the computer tells me this re the DVD/CD drive: “Windows successfully loaded the device driver for this hardware but cannot find the hardware device. (Code 41)” - (NEC DVD RW ND-2500A)

Please can somebody help, What do I need to do to get my computer to recognise CDs again?

Susie in Sydney

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