If you use DualBootPRO after booting into safe mode and then try to delete those files you will not be able to. The only other thing that will prevent you from deleting them is that the files/folder are currently "owned" by the system. The purpose of going to the Security page of Properties is to change ownership to Admin and to change control of them to Admin. This will then allow you to delete those items.
Have you found the tabs/pages for Security now? From the screenshots you posted of the file properties it does NOT look like you are getting to safe mode...you should not have that bright blue border at the top of the windows. It should look like this:
When the system starts, and you just get past the post screens, are you pressing F8 repeatedly to boot into safe mode?
"The great majority of mankind are satisfied with appearances, as though they were realities, and are often more influenced by the things that seem than by those that are." - Niccolo Machiavelli