Read the Room Before You Touch Anything
Choose the first move that preserves evidence and creates a known-good versus known-bad split.
The room is tense. Three people want to change three things at once. The display is dark 11 minutes before the demo. What is the strongest first move? Test the same laptop on a known-working display before swapping other parts. Right. This creates a clean known-good versus known-bad split and preserves the current evidence. Replace the laptop, cable, adapter, and projector input all at once. Weaker. A bulk swap may get lucky, but it destroys the isolation path and leaves no clear cause. Restart the laptop because restarts fix many presentation problems. Plausible, but premature. A restart changes state before…
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