If user doesn’t see the menu with both plugins deactivated (I suppose that you don’t have some other menu blocking plugin) then user does not have enough permissions for this menu.
OK. Let’s clarify, what do you name ‘Dashboard’ menu.
WordPress has ‘Dashboard’ menu item with submenu consisted from 2 items: Home, Updates.
Do you write about this menu?
Or do you write about full admin menu? What menu item user does not see? Let’s try to resolve a problem with some menu item 1st.