Win7 CD/DVD driver missing when installing

Mother Board: GA-X79-UD3
OS: Win7

Syndrome:
boot from DVD--> install program --> warning message "A required CD/DVD drive device driver is missing. If you..."

Valid solution for my case:
1. Boot from DVD
2. Don't install the system (BTW, you can't install your system in normal operation due to the mentioned warning message)
3. Choose 'repair your system' -> 'DOS mode' -> change drive to 'D' -> 'cd sources' --> execute the file 'setup.exe'
4. start installing in my case and everything goes well