Introduction
This guide will show you how to replace the motherboard in a Lenovo Thinkpad T450s. Ample lighting and storage for small parts recommended.
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Flip the laptop over so that the bottom is facing up.
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Unlock the battery by sliding the keys outwards. When unlocked, push the battery forwards to remove.
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Unscrew all 3.7 mm Phillips #0 screws from the back of the laptop. Half of them will remain attached to the cover.
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Lift off the back cover.
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Use a plastic opening tool or a nylon spudger to push the fan's bundled cable connector free.
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Remove the fan and heat sink assembly from the motherboard.
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Remove the hard drive from the motherboard's by gently pulling it out and up at the same time.
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Unplug the cable that attaches the polymer battery to the motherboard by pulling it out carefully.
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Remove the ribbon cable attached to the the battery case carefully by pulling the cable up and out.
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Remove the motherboard from the case. If the motherboard does not come off the case or feels stuck, make sure that you have removed all the cables prior
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To reassemble your device, follow these instructions in reverse order.
