Running W7 64 bit, CD_ROM is ASUS DRW 24B1ST. I removed a sound card and deleted the drivers for it. (Plan on using a new USB sound card) Now the computer will not recognize the optical drive. I have gone back to all the restore points I have to no avail. (I am not sure actually when the drive stopped working as I don't use it often.) I get the following message from Device Manager: "configuration infor in registry is incomplete or damaged (Code 19)." I have tried deleting the driver and rebooting. I have run Microsoft's "Mr. Fixit" which indicated a problem with the driver. I have tried the ASUS website but haven't been able to get a driver download. Any help will be appreciated before I lose what littsle hair I have left.