Hi Andrew,
Let's see if we can help.
'Gizmo' could mean a few different things in your situation.
Do you mean the widgets for the bones (the ones to control the character)
Or do you mean the Transform Gizmos? (the manipulator to translate and rotate the controls)
Widgets:
-Make sure you are not hiding the bones with H. (try alt H) to unhide
-perhaps you are in local view (check the top left of the 3d viewport to see if it says (Local). If it does press /
- Maybe the bone collections have been hidden?
Check the eyeballs
Manipulators:
- it could be that you have switched to a specific tool from the side panel. Try changing to the box select tool which will allow any active gizmos to be visible at the same time. (it's the top one of the tool bar there)
-Make sure you have the manipulators enabled but the gizmo overrides off. (this is the most flexible way to use the maniputors imo)
Failing any of those reasons, we will certainly need more information.
Screen shot, screen cast or the actual file will help in your situation.
Hope you get to the bottom of it.
