Microsoft Office Enterprise 2007 Encountered An Error During Setup Now

System: Windows Server 2008 R2 (Standard) User: Arthur P., Senior Systems Architect

Below the usual "OK" button, there was a second button Arthur had never seen in twenty years of IT: System: Windows Server 2008 R2 (Standard) User: Arthur P

Arthur reached for his mouse. He clicked "OK." System: Windows Server 2008 R2 (Standard) User: Arthur P

He didn't have disc 4. No one had disc 4. It had been lost in a flood in 2014. System: Windows Server 2008 R2 (Standard) User: Arthur P