|Still confused. If you could enter the BIOS with the keyboard initially, then it had to be set to enable legacy USB devices. |
If you have a DVDR (copy) that was burned wrong the optical drive may seek to read the disk if the drive is set before the hard drive. Have you ever actually successfully booted from that Windows 7 disk?
"and it proceeds to boot from the DVD" That statement is confusing. If the computer was booting to the Windows 7 disk then what was the initial problem that required any changes. Are you using the term booting loosely? Did you see a Windows 7 splash screen or more?
Any disk, including a blank will cause the optical drive to attempt to boot from the disk in the drive. If the correct files are not on the disk then the optical drive will be passed over.
We are going in circles here. Let me recap. You are trying to install Windows 7 from a DVDR (copy) Is this a full version or a restore disk? What is the model of your computer?
Are you using an EXTERNAL optical drive?