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He had performed the "boardview fix."
You cannot fix the E89382 board with just a multimeter. Modern PCBs are multi-layer. Traces run internally. The file (typically .brd , .cad , or .fz ) is a visual map of every component, via, and hidden trace.
Often caused by a faulty BIOS or a failing Northbridge chip. Some users have resolved intermittent "no display" issues by reflowing/reheating solder joints around the main chips. BIOS Corruption: