I ran the CD/DVD drive diagnostic test as you recommended, putting a music CD in the drive when prompted. But the diagnostic apparently couldn't "see" this CD--despite the fact that I am able to play--and even import--this CD's tracks with iTunes. Here are the results of running the diagnostic test:
Microsoft Windows 7 x64 Business Edition Service Pack 1 (Build 7601)
HP-Pavilion BN496AV-ABA HPE-170t
iTunes 11.1.4.62
QuickTime 7.7.4
FairPlay 2.5.16
Apple Application Support 3.0
iPod Updater Library 11.1f5
CD Driver 2.2.3.0
CD Driver DLL 2.1.3.1
Apple Mobile Device 7.1.0.32
Apple Mobile Device Driver 1.64.0.0
Bonjour 3.0.0.10 (333.10)
Gracenote SDK 1.9.6.502
Gracenote MusicID 1.9.6.115
Gracenote Submit 1.9.6.143
Gracenote DSP 1.9.6.45
iTunes Serial Number 0025B5680CFA8670
Current user is not an administrator.
The current local date and time is 2014-01-30 21:07:09.
iTunes is not running in safe mode.
WebKit accelerated compositing is enabled.
HDCP is not supported.
Core Media is supported.
Video Display Information
NVIDIA, NVIDIA GeForce G210
**** External Plug-ins Information ****
No external plug-ins installed.
Invalid LowerFilters registry value.
For more information, click Help.
iPodService 11.1.4.62 (x64) is currently running.
iTunesHelper 11.1.4.62 is currently running.
Apple Mobile Device service 3.3.0.0 is currently running.
**** CD/DVD Drive Tests ****
LowerFilters: Afc
UpperFilters: GEARAspiWDM (2.2.3.0),
Failed while scanning for CD / DVD drives, error 2510.
Virtual drives can sometimes interfere with reading and writing CDs in iTunes. If this is a virtual drive and you are having problems with other drives, try uninstalling the virtual CD application.
E: Unsupported CD or DVD drive.
Virtual drives can sometimes interfere with reading and writing CDs in iTunes. If this is a virtual drive and you are having problems with other drives, try uninstalling the virtual CD application.
Something else I can try? Thanks!