10240 is the initial release build of Windows 10. 1607 is the Anniversary release. There are issues in the 10240 related to imaging that causes issues with the menu's, etc. Microsoft Released fixes through updates to the product. 1607 doesn't have the same black screen issues. As to the suggested methods for getting the product ready for sysprep, in the build of 1607 I just installed, without running any updates, I still had to follow the instructions for removing the metro apps via powershell to allow Sysprep to function. I didn't test if it would work without following the instructions to disable the windows update services. I did that before i did the powershell removal of the metro apps.
In other words, on an unpatched (no updates), fresh install of 1607, I used both of the articles mentioned and was able to successfully capture a sysprepped Windows 10 image. (HOWTO125161, TECH223595).
My next step was to run all the latest updates and test again.