You are a consumer support technician.

A customer performs a complete PC backup of his Windows Vista computer before installing a custom application. After the application is installed, the computer fails to restart.

You need to provide the customer with the procedure to perform a complete restoration of the computer.

What should you instruct the customer to do first?

A.
Start the computer from a Windows PE disk.

B.
Start the computer from a DOS boot floppy disk.

C.
Start the computer from a PXE compliant network card.

D.
Start the computer from the Windows Vista installation media.