New hard drive installed w/ winxp sp2. I have TDK CDRW241040B w/ updated firmware. It is installed alone (as TDK advises) on the 2nd IDE. it will play an audio cd but will not see a data disk nor, obviously, copy to it. The same issue as when it is a slave on 1st IDE or slave on 2 IDE. A hard drive will run on the 2nd IDE. I have tried several connector cables. When i set it up w/ my USB enclosure, EVERYTHING works!! i can play audio, read data disks, install prog, copy and erase. i have done all the troubleshooting in the world (MS site articles, registry changes, troubleshooting sites like these). i had the same problem before i installed the new HDD. UPDATE since prob started: now it won't play audio.
Ok, does the CD Spin up when you insert it into the drive? Now it doesn't play audio CD's, that might suggest it's not getting enough power. Secondly, is it recognised in the BIOS? On a lot of PC's, press DEL while it is first switching on, and you'll get a menu. Within the simple setup section there should be a list of all installed drives, and it should be there. Finally, make sure you have the IDE cable in the correct way around. On newer ones there are bits that stick out meaning it will only fit in one way.
I don't suppose you have another PC (maybe a friends) that you could try it in to see if it does the same thing?
How are the jumpers set? If it's physically connected as a slave, the jumpers need to be set to match on the back of the drive.