My LG DVD-ROM drive,model 8120B,will not recognize CD-ROM discs or DVD-ROM discs. I have uninstalled and re-installed the drive with the same result. Clicking on the drive letter results in "please insert disc in drive D" when a disc is already in the drive. I am running WinXP. Up until 2 days ago the drive was functioning normally. A check of systems hardware indicated the drive is working properly.