I purchased Precision 5510 with this option
620-AAYS: Windows 10 OS recovery USB 55YG7 Kit
following the procedure here: Reset or reinstall Windows 10 on your Dell computer
http://www.dell.com/support/Article/us/en/19/SLN297920/EN
the last section: Restore your Dell computer to the Dell factory image using recovery media
step 7 Select Factory Image Restore. fails as there is no "Factory Image Restore" option to select.
I tried various other menu options, "Reset This PC", "Advanced > System Image Recovery" all fail in different ways.
I also tried downloading a recovery image using this procedure:
Recovery Image of Microsoft Windows
http://www.dell.com/support/home/us/en/19/drivers/osiso
and
How to use the Dell Hosted Recovery Image of Microsoft Windows
http://www.dell.com/support/article/us/en/19/SLN299044
the self created USB has similar directory and files structure as the 55YG7 Kit supplied with the system and fails in the same way.
Any advice on the procedure to Restore the Factory Image would be appreciated.