I would like to disagree.
I recently bricked my laptop by lowering the voltage on the processor and i fix it without sending to any service. How i fix it? It's very simple. Firstly i change my CPU (i7-4700mq) to other model (i5-4210m). Then reset bios settings to default and swap CPUs again. That's all, everything works fine.
PS. I know that last answer was 2 years ago, but i want to spread fix for this problem.
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