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Introduction

If your Lenovo IdeaPad Flex 5 Chromebook is experiencing persistent boot failures, overheating, charging issues, or complete power loss, use this guide to replace the motherboard.

The motherboard is the central circuit board that connects and powers all major components of your Chromebook, including the CPU, memory, storage, and display. A faulty motherboard can cause symptoms such as failure to power on, random shutdowns, or inability to charge even after replacing the battery or charger. Before beginning this replacement, power off your Chromebook completely and disconnect it from any external power source. If your device has a swollen battery, cracked display, or signs of liquid damage, review appropriate safety precautions before proceeding.

This guide requires disconnecting and reconnecting multiple ribbon cables and internal components. Take care when handling the battery and display cables and avoid using metal tools near the motherboard. If your replacement motherboard does not include a pre-installed processor or memory, you may need to transfer these components from the original board.

Be sure to back up your data before starting this repair, as replacing the motherboard may result in loss of locally stored files. For additional guidance on Chromebook data backup and recovery, see Google’s Chromebook Help Center.

What you need

Step 1 Lower Case

Lenovo IdeaPad Flex 5 Chromebook Motherboard Replacement, Lower Case: step 1, image 1 of 3

Lenovo IdeaPad Flex 5 Chromebook Motherboard Replacement, Lower Case: step 1, image 2 of 3

Lenovo IdeaPad Flex 5 Chromebook Motherboard Replacement, Lower Case: step 1, image 3 of 3

Remove the nine 6.2 mm-long screws securing the lower case with a Phillips #0 screwdriver.
Insert an opening pick or opening tool into the seam between the lower case and chassis.
Pry around the entire perimeter until the lower case fully releases.

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Step 2

Lenovo IdeaPad Flex 5 Chromebook Motherboard Replacement: step 2, image 3 of 3

Lift and remove the lower case.

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Step 3 Motherboard

Lenovo IdeaPad Flex 5 Chromebook Motherboard Replacement, Motherboard: step 3, image 1 of 3

Lenovo IdeaPad Flex 5 Chromebook Motherboard Replacement, Motherboard: step 3, image 2 of 3

Lenovo IdeaPad Flex 5 Chromebook Motherboard Replacement, Motherboard: step 3, image 3 of 3

Remove the one 2.4 mm-long Phillips #0 screw securing the SSD.
Remove the SSD.

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Step 4

Lenovo IdeaPad Flex 5 Chromebook Motherboard Replacement: step 4, image 3 of 3

Lift the locking flap and disconnect the the ribbon cable connector.

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Step 5

Lenovo IdeaPad Flex 5 Chromebook Motherboard Replacement: step 5, image 3 of 3

Lift the flat cable connector and detach the DB connector.

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Step 6

Lenovo IdeaPad Flex 5 Chromebook Motherboard Replacement: step 6, image 3 of 3

Next to the fan, lift the flap covering the Wi-Fi card connectors.
Lift the two coaxial cable connectors to remove them.

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Step 7

Lenovo IdeaPad Flex 5 Chromebook Motherboard Replacement: step 7, image 3 of 3

Remove one 2.4 mm-long Phillips screw securing the Wi-Fi card.

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Step 8

Lenovo IdeaPad Flex 5 Chromebook Motherboard Replacement: step 8, image 3 of 3

Remove the following screws with a Phillips #0 screwdriver:
Three 2.4 mm-long screws
Two 2.4 mm-long screws
Two 6.2 mm-long screws

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Step 9

Lift motherboard towards hinges and remove.

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Conclusion

To reassemble your device, follow the above steps in reverse order.
Take your e-waste to an R2 or e-Stewards certified recycler.
Repair didn’t go as planned? Try some basic troubleshooting or ask our Answers community for help.