Disassembling Your Lenovo Yoga C940: A Step-by-Step Guide

The Lenovo Yoga C940 is a sleek and powerful 2-in-1 laptop known for its impressive performance and versatility. However, like any electronic device, it may require disassembly for various reasons, such as upgrading components, troubleshooting hardware issues, or cleaning dust and debris. While Lenovo offers repair services, some users prefer tackling repairs themselves, which can be a cost-effective and rewarding experience. This guide will walk you through the process of disassembling your Lenovo Yoga C940, providing detailed instructions and safety precautions.

Before You Begin:

Before embarking on this journey, it is crucial to understand that disassembling your Yoga C940 can void your warranty. It is also essential to exercise extreme caution throughout the process, as any mishandling can lead to damage to your device. Here are some essential steps to take before you begin:

  • Back up your data: Before you start disassembling your laptop, ensure you have backed up all your important files and data. This includes data stored on your hard drive, SSD, and cloud services.
  • Discharge the battery: Disconnect the power adapter and let the battery fully discharge. This step is crucial for safety as it eliminates any risk of electric shock.
  • Gather necessary tools: You will need a few tools for disassembling the Yoga C940. These tools include a Phillips-head screwdriver, a Torx screwdriver (T5), a spudger, and a small suction cup.
  • Prepare a clean and well-lit workspace: Disassemble your laptop in a clean, well-lit area to avoid damaging delicate components.

Step 1: Removing the Bottom Cover

  1. Locate the screws: The Yoga C940’s bottom cover is secured by several screws. Identify these screws, usually located around the perimeter of the bottom cover and near the hinge area.
  2. Remove the screws: Use a Phillips-head screwdriver to remove all the screws holding the bottom cover in place. Pay attention to the length and type of screws as they may vary.
  3. Detach the bottom cover: Once all the screws are removed, carefully pry the bottom cover off using a spudger. Start at a corner and work your way around, gently prying the cover loose. Avoid using excessive force, as this could damage the clips holding the cover in place.
  4. Disconnect the battery connector: Once the bottom cover is removed, you’ll see the battery. Disconnect the battery connector carefully to prevent any potential damage.

Step 2: Accessing Internal Components

  1. Remove the RAM: The RAM slots are located on the motherboard, directly beneath the battery. Carefully pry up the clips securing the RAM modules and gently pull them out.
  2. Remove the SSD: The SSD is usually located on a separate module, connected to the motherboard. Disconnect the SSD connector and gently remove the module.
  3. Remove the Wi-Fi card: The Wi-Fi card is usually located in a separate slot on the motherboard. Disconnect the Wi-Fi card connector and remove it from the slot.

Step 3: Replacing Components (Optional)

  1. Install the new components: If you’re replacing components like the RAM, SSD, or Wi-Fi card, ensure you’ve purchased compatible parts. Install the new components in the respective slots, making sure they are properly seated.
  2. Reconnect the components: Reconnect the battery connector, SSD connector, and Wi-Fi card connector.

Step 4: Reassembling the Yoga C940

  1. Secure the bottom cover: Before reinstalling the bottom cover, ensure all the components are properly secured and connected. Then, carefully place the bottom cover back on the laptop.
  2. Screw in the screws: Reinstall all the screws you removed earlier, making sure they are tight enough to secure the bottom cover but not too tight to damage the threads.
  3. Test the laptop: Once the Yoga C940 is reassembled, test its functionality by turning it on and checking if all the components are working correctly.

Disassembling the Screen (Advanced)

If you need to access the screen for repairs or upgrades, you’ll need to disassemble the screen assembly, which is a more complex process:

  1. Remove the hinges: Disconnect the power adapter and use a T5 Torx screwdriver to remove the screws that secure the hinges to the laptop chassis. Carefully detach the hinges from the laptop chassis.
  2. Disconnect the cables: Disconnect the cables connecting the screen to the motherboard. These cables usually include the display cable, touch screen cable, and webcam cable.
  3. Remove the screen assembly: Carefully lift the screen assembly from the laptop. Be extra cautious during this step to avoid bending or damaging the screen itself.
  4. Disassemble the screen: Once the screen assembly is removed, you can further disassemble it to access the display panel, touch screen, and webcam.

Additional Tips for Disassembling the Lenovo Yoga C940:

  • Use a non-conductive mat: Work on a non-conductive mat to prevent static electricity from damaging delicate components.
  • Take photos: Take photos of the disassembling process to help you reassemble the laptop correctly.
  • Be patient: Disassembling and reassembling a laptop can be a time-consuming process. Be patient and take your time.
  • Use a magnifying glass: If you have trouble seeing small components, use a magnifying glass to assist you.


Disassembling your Lenovo Yoga C940 can be a rewarding experience, allowing you to access and repair internal components. However, it is a delicate and potentially risky process. If you are not comfortable with the disassembly process, it is best to seek professional assistance. By following these detailed instructions, using appropriate tools, and exercising caution throughout the process, you can safely disassemble and reassemble your Yoga C940 without causing any damage. Remember to always back up your data and be aware of potential risks involved.


Why would I need to disassemble my Lenovo Yoga C940?

Disassembling your Lenovo Yoga C940 can be necessary for various reasons. You might need to access internal components for repairs, upgrades, or cleaning. For instance, if your keyboard is malfunctioning, you might need to disassemble the laptop to replace it. Similarly, if you want to upgrade the RAM or storage, you’ll need to access these components by taking apart the laptop.

Additionally, if your laptop is experiencing overheating issues, you might need to clean the fan and heatsink, which requires disassembly. It’s essential to note that disassembling your laptop can void your warranty, so consider this before proceeding.

What tools will I need to disassemble my Lenovo Yoga C940?

To disassemble your Lenovo Yoga C940, you will need a few essential tools: a Phillips head screwdriver, a spudger, a prying tool, and a small bowl for storing screws. A Phillips head screwdriver will be used to loosen and remove the screws holding various components in place. The spudger, a thin, flat tool, will be used to pry apart the plastic casings and detach connectors. A prying tool, similar to a spudger but with a more robust tip, can be used to separate components that are stuck together. Finally, a small bowl will help you keep track of all the screws you remove, ensuring you don’t lose any during the process.

Remember to use tools specifically designed for electronics to avoid damaging your laptop. It’s also crucial to be careful and apply minimal force when prying apart components to prevent damage.

Is it safe to disassemble my Lenovo Yoga C940?

Disassembling your Lenovo Yoga C940 can be safe if you follow the correct procedures and use caution. However, it’s crucial to understand that there are risks involved, and you should proceed with caution. For instance, you might accidentally damage internal components if you apply excessive force or use inappropriate tools. Additionally, there’s a risk of static discharge damaging sensitive components if you’re not careful.

To minimize the risks, ensure you’re working in a static-free environment and ground yourself before handling any electronic components. Follow the steps outlined in the disassembly guide meticulously, and if you encounter any difficulty, seek help from a qualified technician.

What should I do if I encounter difficulties during disassembly?

If you encounter difficulties during the disassembly process, it’s best to stop and seek assistance from a qualified technician. Trying to force components apart or proceed without the necessary knowledge can lead to further damage and potentially void your warranty.

It’s better to err on the side of caution and seek professional help. Remember that the disassembly process involves delicate components and precise steps, and even a small mistake can have significant consequences.

Will disassembling my Lenovo Yoga C940 void my warranty?

Disassembling your Lenovo Yoga C940 can potentially void your warranty, depending on the specific terms and conditions of your warranty agreement. Most manufacturers have clauses that state that any unauthorized modification or repair can void the warranty.

However, if you’re performing a simple cleaning or upgrading a component like RAM, it’s unlikely to void your warranty, but it’s always best to check with your manufacturer beforehand. If you’re unsure, it’s best to contact your manufacturer or an authorized service center for guidance.

Can I reassemble my Lenovo Yoga C940 after disassembling it?

Yes, you can reassemble your Lenovo Yoga C940 after disassembling it, provided you follow the steps in reverse order and ensure all the components are properly connected. It’s crucial to note that you need to reassemble the laptop carefully and ensure that all the screws and connectors are properly aligned and secured.

If you’re unsure about any step, it’s better to consult the disassembly guide or seek assistance from a qualified technician. A poorly reassembled laptop can lead to malfunctioning components or even permanent damage.

What should I do if I damage my Lenovo Yoga C940 during disassembly?

If you damage your Lenovo Yoga C940 during disassembly, it’s best to stop and seek assistance from a qualified technician. Trying to fix the damage yourself could lead to further complications and potentially void your warranty.

It’s crucial to remember that even a small mistake during disassembly can have significant consequences. Seeking professional help from a qualified technician is the safest and most reliable option to address any damage incurred during the disassembly process.

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