virtualbox.org

Dear All
I get this messaage when getting just past the "installing W7"message
A required USB or DVD driver is missing. If you have floppy or cd please insert it now. if the installation is on a CD, you may safely remove it now.
What is happening please - any ideas welcome
John

Sorry, none of that is familiar, and in any case I see nothing in there that relates to VirtualBox. Please go to a Microsoft forum for Windows support.

The missing DVD driver is familiar. It indicates a botched/corrupt install media. What do the checksums say?