Hi to all, I have two computer systems. One with CD-RW (TDK) device and one with CD-R (SONY) and CD-RW (TEAC) devices. My CD and CD-RW devices work pretty strange on Windows 2000 (on the first PC) and Windows XP (on the second PC). In fact they suddenly don't work. When I selected some drive Windows system responds with message 'Insert a disk into the drive X:' when there is a disk into the drive already. But what I found?! When I reboot any of my machines with media into the drive it works perfectly. I can change the CDs and read and write and so on. But when I reboot my machine without a media into the drive I can't use it anymore. As you presume I tried to reinstall the drivers, uninstall the devices, ... Does anyone have any suggestions? How can I solve this problem without reinstalling the whole OS. Thanks in advance.