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The disc, optical drive, firmware, any of them may be the major cause DVD Disc A damaged or incompatible disc is difficultly recognized by DVD drive Dust, smudges and scratches on disc may prevent the hardware from reading the content Inconsistent region code of disc and DVD drive is another reason A ROM drive can read discs but not write to them, and has no use at all for a blank disc R Recordable You can write to one of these discs once (provided you have an R drive) Windows Computer Won't Recognize DVD When your Windows computer doesn't recognize your DVD, you can also try to fix the problem by using following solutions show the hidden CD/DVD drives, reinstall or update the drivers, run Hardware and Devices troubleshooter, delete corrupted registry keys, use Command Prompt Cd Rom Wikipedia Dvd rw drive not reading blank disc
