10 
4 Why won't my laptop boot up?
When I press the power button, nothing happens.
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Check the power supply and make sure that the battery has charge. If you're not sure how to do this, remove the battery and use the main charger that came with your laptop. Also make sure the charger has the correct voltage and current for your laptop. Typically a laptop voltage requires 16-20V.
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When power on, the screen locks up on "Lenovo" permanently. Please help!
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