The Fault Was So Small, It Took Hours to Find! (HP 840 G3 dead)

In this video, I take you through the complete diagnosis and repair of a dead HP EliteBook 840 G3 motherboard. Although the fault turned out to be a shorted capacitor, the real challenge was locating the exact component responsible. This wasn't a repair where the fault was obvious—we had to follow the evidence, take detailed measurements, analyze the power rails, and eliminate possibilities one by one until the motherboard revealed the problem. If you've ever wondered how professional technicians diagnose a laptop that shows no power, this video will give you a real look at the troubleshooting process from start to finish.