Owners of a popular model Lenovo G500 often face the need to upgrade or repair a device when the factory resource begins to deplete. Over time, your laptop may start to slow down due to a clogged cooling system or aging components such as the hard drive or RAM. Self-disassembly allows you to extend the life of the device without contacting expensive service centers, if you are careful and consistent.
The process of dismantling the case of this model has its own characteristics, characteristic of the budget Lenovo series of the early 2010s. Unlike modern ultrabooks, it uses a classic fastening system with screws and plastic latches, which makes operation more predictable, but requires caution when disconnecting cables. The right approach to disassembling a laptop eliminates the risk of damage to fragile plastic elements and contact pads of the motherboard.
Before proceeding with physical intervention, it is necessary to prepare a workspace and the necessary tools. The absence of static electricity and the presence of a high-quality screwdriver with a magnetic tip is a guarantee that you will not drop small screws in hard-to-reach places of the case and will not lose them. It is also worth making sure that you understand which components require replacement or maintenance, so as not to carry out unnecessary manipulations.
Preparation of tools and preliminary safety measures
The success of any electronics repair operation depends on the quality of preparation. To work with Lenovo G500 You will need a set of Phillips screwdrivers, preferably with magnetic tips, so as not to lose small M2 and M2.5 screws. You will also need a plastic pick card or a special spatula to carefully pry the lid latches, as metal tools can leave deep scratches on the case.
A critical step is to fully discharge the device and disconnect external power sources. This is necessary to prevent a short circuit on the motherboard when you touch the internal components. Turn off the laptop, disconnect the power supply and, if possible, remove the battery before starting any work on the internals.
Don't forget to organize a place to store screws. It is recommended to use a magnetic mat or simply lay out the unscrewed elements in sections on a sheet of paper with signatures. In the model Lenovo G500 The screws are different lengths, and installing a long screw in a short hole can damage the threads or, worse, puncture the motherboard.
- 🔧 Phillips screwdriver PH0 and PH00 for different size screws.
- 🔋 Improvised tool for opening latches (plastic card).
- ⚡ Antistatic bracelet or regular touching of grounded objects.
- 📸 Smartphone camera for recording screw locations.
Static electricity is the hidden enemy of electronics. If you're working at home, simply touch the metal battery heatsink or system case before handling the motherboard. This will release the accumulated charge and protect sensitive microcircuits from breakdown.
⚠️ Attention: Never start disassembling while the laptop is in sleep or hibernation mode. Completely turning off and removing the battery is mandatory, otherwise the risk of damage to the power controller increases many times over.
Removing the back cover and disconnecting the battery
The first step in the process showdown is to remove the bottom cover. On the model Lenovo G500 it is secured with several screws hidden under rubber feet or stickers, and is also secured with latches around the perimeter. Start by removing the visible screws located in the center and corners using a suitable screwdriver.
After removing all the screws, carefully insert a plastic spudger into the gap between the bottom cover and the top of the case. Move the tool around the perimeter, feeling the resistance of the latches. Do not use excessive force as the plastic may crack, especially in the corners where it is most fragile.
Once the cover is free from the latches, lift it and set it aside. You will immediately have access to the internal components, but the main action at this stage is to disconnect the battery. This must be done immediately to de-energize the system before further manipulation of other elements.
Battery in Lenovo G500 connects to the motherboard via a wide connector. Do not pull on the wire itself, as this may cause it to break. Carefully pry the plastic connector with tweezers or your fingernail and pull it straight up or towards you, depending on the direction of the connector.
- 🔩 Unscrew all the screws on the bottom panel, including those hidden under the stickers.
- 🔋 Disconnect the battery cable from the motherboard first.
- 🔌 Check the reliability of the disconnection by making sure that the connector is completely out of the socket.
Sometimes the battery in this model may be built-in and not easily accessible, but in most G500 configurations it is removable and connected via a cable. If you see that the battery is built into the case and does not have an external connector, proceed to the next disassembly step, but be aware of the risks.
- Standard screwdriver set
- Magnetic set
- Improvised tools (knife, card)
- I don't do repairs
Replacing the drive and RAM
One of the most common reasons for disassembly Lenovo G500 is replacing the hard drive with a faster SSD or increasing the amount of RAM. These procedures do not require complete disassembly of the case and can be performed immediately after removing the bottom cover, saving the user time and nerves.
To replace the hard drive, locate the metal bay in which it is located. It is usually secured with two screws and has a plastic SATA connector. Unscrew the mounting screws, carefully remove the disk, disconnect the cable and replace it with a new SSD. Make sure the new drive fits snugly in the slot and is not loose.
The RAM in this model is located in a special slot, closed with a metal cover or opened immediately after removing the back cover. If there is a cover, unscrew one screw and remove it. To remove the memory stick, move the metal clips apart and the stick will lift itself up at an angle of 45 degrees.
Installing a new memory stick occurs in the reverse order: insert the module at an angle, making sure that the notch on the contacts matches the key on the slot, and gently press down until the latches click. Do not use force as the contacts on the board are very fragile.
☑️ Check components before installation
If you are planning an upgrade, please note that Lenovo G500 Supports DDR3L RAM with a reduced voltage of 1.35V. Installing regular DDR3 may cause the system to become unstable or completely fail at boot.
- 💾 Replace HDD with SSD to significantly speed up system loading.
- 🧠 Install DDR3L memory up to 16 GB for comfortable work.
- 🔩 Secure all components with screws, but do not overtighten them.
Removing the Keyboard and Top Case
To access the cooling system or motherboard, you must remove the keyboard. In the model Lenovo G500 The keyboard is attached to the top cover using latches and several screws hidden under the back cover. First you need to unscrew the screws that hold the keyboard on the bottom, usually two or three.
After removing the screws, carefully pry up the edges of the keyboard with a plastic spatula. It is held on by latches that need to be unfastened slowly, moving from edge to edge. Do not lift the keyboard high, as there is a cable underneath that connects it to the motherboard.
Once the keyboard is unfastened, turn it over and disconnect the cable. The cable connector is usually closed with a fixing frame that needs to be lifted up. Carefully pull out the cable and put the keyboard in a safe place. Be extremely careful, as the cable contacts are easily damaged.
Removing the top case (palmrest) requires removing all visible screws on the back cover and keyboard. After this, you need to carefully unclip the latches around the perimeter. This is the most critical stage, since there are many cables for the touchpad, speakers and LEDs.
What to do if the keyboard cable is torn?
If the cable is torn, it can be replaced by ordering an original spare part. However, if the contact pad on the motherboard is damaged, the repair will be extremely difficult and will require soldering of micro-components. In this case, it is better to contact a service center.
When detaching the top case, be sure to disconnect all cables: touchpad, speaker, power indicators and Wi-Fi antennas. Each connection requires an individual approach: some need to be lifted, others need to be unscrewed. Memorize or photograph the location of each connector.
⚠️ Attention: The touchpad cable in the model Lenovo G500 very short and fragile. When removing the cover, do not pull it too hard, otherwise it may tear right at the base of the connector, requiring a difficult repair.
Removing the cooling system and motherboard
If your goal is to replace thermal paste or clean the cooler, you will need to remove the cooling system. To do this, unscrew the screws securing the heatsink to the processor and video card. The screws are numbered from 1 to 4 or 5, and they must be unscrewed strictly in the specified order so as not to damage the processor crystal from uneven pressure.
After unscrewing the screws, carefully separate the heatsink from the board. If the thermal paste has dried out and stuck, do not pull it too hard. Using light rocking movements, disconnect the radiator. Below it you will see the processor and video card, which require new thermal paste.
To completely replace thermal paste, use high-quality paste, for example, MX-4 or an equivalent. Apply a thin layer of it to the center of the processor and video card. Do not use too much paste as it may leak outside the crystal and onto the contacts, causing a short circuit.
The motherboard is removed only after removing all peripheral elements: cooling system, hard drive, battery, keyboard, speakers and antennas. Remove all screws holding the board in place and carefully lift it up. Make sure there are no hidden connections or loops that you may have missed.
Before applying thermal paste, clean the surface of the processor and heatsink from old paste with isopropyl alcohol and a lint-free cloth. This will ensure maximum contact and cooling efficiency.
When assembling the cooling system, make sure that the screws are tightened evenly. Uneven tightening can lead to overheating of the processor even with new thermal paste, since the contact will be broken in one of the zones.
- 🌡️ Unscrew the radiator screws in the order indicated by the numbers on the board.
- 🧹 Clean the contacts of the processor and radiator with isopropyl alcohol.
- 🔧 Tighten the radiator screws crosswise for even pressure.
Neglecting to clean the cooling system can lead to overheating and failure of the video chip, the repair of which is often unprofitable.
| Component | Connection type | Features of dismantling |
|---|---|---|
| Hard drive | SATA 2.5" | Attached with 2 screws, easy to remove |
| RAM | DDR3L SO-DIMM | Secure with metal latches |
| Cooling system | Screws with numbers | Unscrew strictly in numbering order |
| Keyboard | Cable with lock | Requires caution when unfastening latches |
| Touchpad | Cable with lock | Short cable, easy to damage when pulled |
⚠️ Attention: Never attempt to disconnect a Wi-Fi antenna cable without first disconnecting the battery, as this may cause immediate damage to the wireless controller.
Correct assembly and performance testing
Assembling a laptop Lenovo G500 performed in the reverse order of disassembly. Start by installing the motherboard and connecting all the cables that you disconnected. Make sure each connector is firmly seated in its socket and that the latches are fully engaged.
Then install the cooling system, hard drive and RAM. Tighten all the screws, but do not overtighten them to avoid stripping the threads in the plastic housing. Pay special attention to the screws securing the keyboard and top cover.
It is recommended that preliminary testing be carried out before final assembly of the chassis. Connect the battery and power supply, turn on the laptop and check if the system starts and if the keys, touchpad and speakers work. If everything works fine, turn off the device and reassemble the case completely.
If the laptop shows no signs of life when you turn it on, check the connections of the battery and power supply. Perhaps you inserted some kind of cable poorly or forgot to disengage the connector lock. Double-check all connections again.
- 🔌 Check the connections of all cables before final assembly.
- ⚡ Test the operation of the system before installing the bottom cover.
- 🔩 Tighten all the screws, making sure nothing sticks out or touches parts.
After assembly, check the operation of all ports and connectors. Insert the flash drive into the USB port, connect headphones to the audio jack and make sure that the laptop responds to external devices. This ensures that you don't damage the port controllers during disassembly.
Proper assembly sequence and checking the connections before closing the case will ensure that you do not have to disassemble the laptop again due to poor cable connections.
Frequently asked questions and answers about Lenovo G500 disassembly
Is it possible to disassemble a laptop without removing the keyboard?
Yes, to replace the hard drive, RAM and clean the cooling system, you only need to remove the bottom cover. The keyboard needs to be removed only if it is necessary to replace the upper case, touchpad, or during a deep repair of the motherboard.
Which thermal paste is best to use for Lenovo G500?
It is recommended to use a quality thermal paste with high thermal conductivity, such as Arctic MX-4, Thermal Grizzly Kryonaut or similar products. Avoid using cheap pastes as they dry out quickly and lose their properties.
What to do if the screw is broken and cannot be unscrewed?
If the screw is stripped, try using a rubber band, placing it on the head of the screw, and pressing down firmly on the screwdriver. You can also use special extractors for stripped screws. As a last resort, you can drill the screw or saw off the head, but this requires high precision.
Do I need to disconnect the battery when replacing thermal paste?
Yes, disconnecting the battery is a safety requirement. Even when the power supply is turned off, there may be residual charges on the board, which can cause a short circuit if the contacts are accidentally touched.
Is it difficult to replace the keyboard in Lenovo G500?
Replacing the keyboard is not a difficult task if you carefully unfasten the latches and do not damage the cable. The main thing is to be careful when disconnecting the cable connector and not to pull on the wire itself.