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Take a careful look at the logic module on the back of the terminal and post the exact part number (e.g. 2711P-RP1) and any firmware or revision information.
Some of the PV+ terminals have a basic CE desktop, and you just need to prevent FactoryTalk View ME from starting up on boot. They were typically labeled "PanelView Plus CE".
But most don't have that desktop access: FTView ME and its configuration menus are the only things that the user can access.