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General CD-ROM information
Loading CD-ROM drivers
Autoexec.bat / Config.sys

Pioneer DR-UA124X causes ! in Windows Device Manager.

This is caused by the CD-ROM drive's firmware. To resolve the issue, edit the autoexec.bat and remark the mscdex.exe line.

General CD-ROM Troubleshooting

See our CD-ROM troubleshooting page which lists complete information on computer CD-ROM drives.