I have a Matshita DVD-RAM UJ-820S (type: DVD/CD-ROM drives) inside a Toshiba Satellite P25 series laptop. It just stopped working two days ago when I bumped the door. Under properties, it says "Location: Location 0 (0)" and "Device Status: This device is working properly." I have researched other threads, particularly :\ is not accessible. The request could not be performed because of an I/O device er -- and followed advice without results. I've gone to recommended links, downloaded from Microsoft, pulled drive out, uninstalled it, reinstalled it, put it back in ... even tried to open it thinking what do I have to lose if I have to go buy a new one anyway. It still doesn't work. Error message I get: "D:\ is not accessible. The request could not be performed because of an I/O device error." I've called Toshiba (I'm out of warranty) and they did not know what to do. They referred me to a service center who said they'd have to configure some stuff probably but it would take three weeks before they'd get to me. I'm in the middle of a project so can't be w/o laptop for 3 weeks. I tried setting up an appointment in three weeks, but they wouldn't bit. I emailed Panasonic, but they said they are one of several OEM providers for Toshiba's internal dvd drive. I researched Microsoft ... ect. It seems there are configurations that need to be done to the drive itself and supposedly, per Toshiba, I can't do them ... only an authorized dealer. I noticed that an unusal amount of people seem to have experienced my same problem. Anyone ever get a resolve on their own ... or should I just stop the research and take it to a dealer some months from now when I am able to be w/o my computer? Thanks much for any help on this one.