I have two optical drives, a Sony CD-RW CRX320EE ATA CD-RW drive, and a Samsung (TSST) CDDVDW SH-223F DVD-RW drive. The Sony is a bit old, but the Samsung is brand-new. Both worked fine under Vista. Neither manufacturer supplies downloadable drivers for these, since they're plug and play, and the OS is supposed to recognize them automatically. I've uninstalled them in Device Manager and rebooted, whereupon Windows tries to install but fails. I get the message "Device driver software was not succesfully installed." I have no clue what else to do. Don't really want to go back to Vista, but these are critical devices. Any ideas? Thanks! BTW, running 64-bit on Intel Core duo, DP35DP mobo, 4 MB RAM. Also, one of the error messages in Device Center claims that "Windows cannot verify the digital signature for the drivers required for this device." Not sure what to do about that. And the drivers already installed for these (the same ones that were installed under Vista) are just the basic MS driver, dated 6/21/2006, that every other CD/DVD drive in the world has. Digitally signed by Microsoft, no less.