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The Lenovo Thinkpad X240, released in 2013, fairly light and compact, and looks familiar to the ThinkPad Line. The X240 is notable for its clunky touch pad.

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Lenovo ThinkPad X240 not turning ON

Why doesn't the Lenovo ThinkPad X240 turn on unless the battery is reconnected after being disconnected once?

The laptop will not turn on unless I disconnect the battery and then immediately reconnect it. I'm seeking advice and insights into why this might be happening. Any guidance or suggestions would be greatly appreciated.

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It may not be waking up from "Sleep" Mode;

@jayeff has answered this question.

Service Manual

Lenovo Thinkpad Service Manual

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