When I boot from the Recovery USB and click TROUBLESHOOT>ADVANCED OPTIONS.
The options System Restore, System Image Recovery, Startup Repair and Command Prompt are available, but Start Settings is not there.
The information in the link for step 4 is incorrect. It does not work as a method to get into safe mode (at least not on my systems using the Recovery USB I created).
I just reran the tests twice on my workshop PC and it definitely does not work.
I also tested it on a second machine, a Win 8.1 laptop, and "Start Settings" still does not appear.
Try it on one of your systems see if it works for you.