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Lenovo Essential G555-0873 CPU Replacement

Introduction

Use this guide to replace the CPU in the Lenovo Essential G555-0873. This requires removing the back panel, removing the fan, and removing the heat sink. The only tool you need to complete these steps is the screwdriver listed below.

What you need

  1. Lenovo Essential G555-0873 CPU Replacement, Bottom Panel: step 1, image 1 of 1

    • Unscrew the two 5.1 mm screws that secure the bottom cover.

    • Note that the screws will not come all the way out of the sockets.

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  2. Lenovo Essential G555-0873 CPU Replacement: step 2, image 1 of 1

    • Lift from the notch until the back panel comes up.

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  3. Lenovo Essential G555-0873 CPU Replacement, Fan: step 3, image 1 of 1

    • Disconnect the fan from the motherboard by pulling the plug shown in the picture.

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  5. Lenovo Essential G555-0873 CPU Replacement: step 4, image 1 of 1

    • Unscrew the three 4.6mm screws shown in the picture.

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  6. Lenovo Essential G555-0873 CPU Replacement: step 5, image 1 of 1

    • Gently lift the fan straight up until it is lifted out of the case.

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  7. Lenovo Essential G555-0873 CPU Replacement, Heat Sink: step 6, image 1 of 1

    • Unscrew the four 7.3 mm screws shown in the picture.

    • Note that springs are attached to the screws. Do not remove the springs.

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  8. Lenovo Essential G555-0873 CPU Replacement: step 7, image 1 of 2 Lenovo Essential G555-0873 CPU Replacement: step 7, image 2 of 2

    • Pull the heat sink assembly out of the laptop.

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  9. Lenovo Essential G555-0873 CPU Replacement, CPU: step 8, image 1 of 2 Lenovo Essential G555-0873 CPU Replacement, CPU: step 8, image 2 of 2

    • Use a flat-head screwdriver on the hinge shown, and turn counter-clockwise to the unlock position

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  10. Lenovo Essential G555-0873 CPU Replacement: step 9, image 1 of 1

    • Remove the CPU

    • There will be old thermal paste on the CPU and heat sink which should be wiped off using microfiber cloth.

    • Before putting the heat sink back in, a small droplet of thermal paste should be applied onto the center of the CPU.

    Edit
Conclusion

To reassemble your device, follow these instructions in reverse order.

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