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Duriing installation of win-7/8/vista through cd/dvd and if you got this error then You need Pen drive to install windows.
Step 1: When you receive “A Required CD/DVD Device Driver is Missing” error dialog click on Cancel button. This action should take you to the welcome screen.
Step 2: Connect bootable USB drive to the computer and begin installing Windows using the USB drive.
Step 3: Now, Remove your bootable USB flash drive and insert it back to different USB port. Click install Now again and continue installation process like usual.
This problem happened to all new version of updated Windows 7 installer. I think, it is due to failure of Windows installer to remain its detection to the USB drive. It lost the connection, and became confused, don’t know where to find the USB drive it used to read before.
Hope This Helps You!
Thanks & Regards
Roshan Kumar
