Hi,
The DMA mode on the CD drive may be switched to PIO mode by XP.
Go to device manager, double click IDE ATA/ATAPI controllers,
double click Secondary IDE Channel (assuming the CD-rom is connected to this
channel), click the Advanced Settings and check for DMA mode.
If it showed PIO mode, try to select DMA mode.
If you cannot change to DMA mode, boot into safe mode and login as
administrator.
go to device manager and then uninstall the Secondary IDE Channel then reboot.
Let windows search and reinstall the IDE channel. Go to device manager and
change to DMA mode again.
Also, you may need to clean the CD len by using a CD Len cleaning kit.
Hope it helps.
Peter