Solutions: Win7 does not recognize the CD-ROM

For friends who are using Win 7 System for computers, if you are in trouble with problem like "Win7 does not recognize the CD-ROM", this may be a good method to solve it.
Analysis: The problem may be that there is an error in the registry keys lead.
　　The Ultimate Solution:
　　Note: Modify the registry at risk, please carefully operation.
　 Press Win + R keys, type Regedt32.exe, press Enter to open the Registry Editor;