Introduction
If the laptop no longer starts and the screen remains black, the cause can be a flat Bios battery. This is simply replaced, after which the device works again without problems.
Parts
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Make sure the laptop is off and remove the battery.
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Loosen all screws (these remain in the case bottom) with a PH 00 screwdriver.
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Open the clips around the case with an iFixit opening tool.
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To remove the case bottom, you have to lift it slightly and push it backwards.
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Be careful not to damage the case!
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Carefully remove the foil
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Disconnect the plug of the battery.
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Remove the battery from the circuit board. This is glued to the circuit board with a spacer.
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Find a replacement battery based on the type designation (in my case a 08K8050 - CR 2032 3V) and insert it.
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Work through the steps in reverse order to reassemble your device.
