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Hello! My CPU Fan started rattling and vibrating so I took it out in order to take a look. The Fan was pretty clean already but I cleaned it again, I applied some thermal paste and now when I try to open the laptop, "Fan error" shows up, I can only continue by pressing "ESC" and by agreeing to...

My lenovo G780 won't turn on. I hit the power button and the lights turn on for a few seconds and just turns off again. The screen never even gets the chance to turn on. What should I do? I tried hard rebooting, and most of the common things already.