问题解决了，方法见内：

Situation
There is a yellow exclamation mark for CD/DVD drives in Device Manager. The device status in the properties of the driver might indicate an error code, for example 32, 37, or 39. Or the drive simply does not appear in My Computer or Device Manager.

Solution

To solve the issue, you have to edit the Windows Registry:
Click Start, then Run, type REGEDT32 and click OK.
Locate and then remove the following registry values:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class{4D36E965-E325-11CE-BFC1-08002BE10318}LowerFilters

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class{4D36E965-E325-11CE-BFC1-08002BE10318}UpperFilters



Close Registry Editor.
Reboot the system for the changes to take effect.

Note: Some programs are unable to detect the CD/DVD drive after these steps. To solve this, simply re-install the program in question, eg: usually your recording software. Also, in few instances the order in which the programs are (re-)installed can make a difference.

And here's another method that will do this automatically for you if you're afraid to edit the registry manually.

http://forums.driverguide.com/showthread.php?t=22131
(automatic fix, post #7, download file: CdGone.zip)

There is also a STICKY in the CD-DVD driver request forum that has instructions on how to do this fix along with a file from Microsoft that will perform the fix. Please read the STICKY for further instructions. This thread: http://forums.driverguide.com/showthread.php?t=30011