If you are installing or repairing Visual Studio from ISO file, the tool you are using to mount the image may not automatically mount it again after a reboot, if this is the case setup won’t be able to find its files and will prompt for them or fail. To complete your installation:

·        You can re-mount the ISO image right after the machine reboots, so setup can find the files.

·        If you receive a prompt for source, re-mount the image and continue.

·        If installation fails, re-mount the ISO, restart installation and continue.

·        Burn a DVD and start setup from the actual DVD.

·        Copy the contents of the image locally and start setup from local folder.