Win XP Pro all updates AMD 2200+ 1.5GB RAM At some point between 1 week ago and three weeks ago (Thanksgiving time frame) My DVD and REV drive disappeared. They are in the BIOS They are not in "My Computer" They are in Device Manager with an exclamation point. The exclamation is a Code 39. "Windows cannot load the device driver for this hardware. The driver may be corrupted or missing." The troubleshoot is of no help. The DVD is a -RW from Khypermedia and the REV is the 35GB model. I have "uninstalled" the drivers and reinstalled. I have removed and rebooted. I have searched for new drivers (they show Microsoft 2001 drivers). I have installed the latest Iomega software. I have switched IDE cables. I have switched IDE connections on the motherboard. The DVD is the Master the REV is the Slave. This has worked since I installed the REV back in June and the DVD is a couple of years old. I have disconnected power and IDE cable to one and booted to the same issue. I swapped devices and again the same issue. About the same time this occurred two Windows updates would not install and the boot and shutdown take 3 times longer than they did. The Windows Office update that won’t install is update KB919029. It is downloaded but continually fails to install. I cannot find it in the add/remove programs list (yes, I have it set up to show updates.) I do not know which the Windows update that won’t install is. It is trying to install during shutdown. Spyware, Worms, Viruses and Trojans are not an issue. Multiple scans with multiple programs show nothing. I have installed both devices into another computer and they work fine there.