During image capture process you receive the following error:
Image Capture Wizard has failed with error code (0x800704CF). For more information, please contact your system administrator or helpdesk operator.

Now if you look at task sequence log it most likely going to say:
Failed to run the last action: Capture the Reference Machine. Execution of task sequence failed.
The network location cannot be reached. For information about network troubleshooting, see Windows Help. (Error: 800704CF; Source: Windows)

This basically means that the network drive that you are trying to capture image to cannot be accessed. Make sure that the user you’ve provided in capture wizard has enough rights to access the network drive and write to it.