Introduction
Laptop Lenovo G505 remains a popular choice among users looking for a reliable workstation at an affordable price. However, over time, even the highest quality equipment encounters overheating, slowdowns, or the need to expand hardware capabilities.
Process Lenovo G505 laptop disassembly requires care and understanding of the housing design. Many users are afraid of damaging latches or cables, but with the right approach this procedure becomes a routine task, accessible even to beginners.
Preparing the workplace and necessary tools
Before starting any physical impact on the device body, it is necessary to ensure safe working conditions. You'll need a clean, well-lit surface where parts won't get lost or scratched.
A key element to success is having the right set of tools. For Lenovo G505 A standard set of screwdrivers may not be suitable, since the screws have a specific shape and size.
- 🔧 Phillips screwdriver PH0 or PH1 for loosening case screws
- 🔩 Plastic card or pick for carefully prying the latches
- 🧤 Antistatic wrist strap or gloves to protect electronics
Disconnecting the device from the network and removing the battery is the first and mandatory step, which is often ignored. Internal Components Lenovo G505 sensitive to static electricity and short circuit.
⚠️ Attention: Never try to unscrew screws with a damaged head by force, as this may lead to thread breakage and the impossibility of further disassembly without specialized tools.
Removing the back cover and disconnecting the battery
The first step in disassembly is to remove all the screws holding the bottom cover in place. Please note that some screws may be hidden under rubber feet or stickers, so inspect the entire perimeter carefully.
After unscrewing the fasteners, use a plastic card to carefully trace the joint between the cover and the body. Movements must be smooth so as not to break the fragile plastic clamps holding the structure.
Once the lid gives way, lift it no more than 45 degrees. Do not pull it sharply upward, as the keyboard or touchpad backlight cables may remain connected under it.
- 💡 Take a photo of the location of the screws before starting work
- 🔌 First of all, disconnect the battery cable from the motherboard
- 🛡️ Make sure the battery contacts are completely de-energized
Inside you will see a classic layout of components, typical of budget models in the mid-segment. Access to RAM And hard drive opens immediately after removing the cover, but access to the cooling system will require more effort.
⚠️ Attention: The battery cable is connected to the board with a lock. You need to disconnect it by lifting the latch up, and not by pulling the wire itself, so as not to break the contacts.
- HDD (hard drive)
- SSD (solid state)
- M.2 NVMe
- Mix HDD + SSD
Removing the cooling system and replacing thermal paste
Cooling system in Lenovo G505 consists of a copper radiator, heat pipes and a fan. Over time, the layer of thermal paste dries out, turning into stone, which leads to critical overheating of the processor and video chip.
To access the thermal interface, you need to unscrew the screws securing the heatsink to the motherboard. It is important to follow the unscrewing order: it is usually indicated in numbers on the radiator body or on the board.
Unscrew the screws one at a time, making several turns on each one so that the pressure is distributed evenly. Sudden removal of the heatsink may damage the processor die.
After removing the heatsink, thoroughly clean the old thermal paste from the processor and heatsink base. Use isopropyl alcohol and a lint-free cloth or cotton swab to achieve a perfect clean.
- 🧼 Use only isopropyl alcohol for cleaning
- ❄️ Apply new thermal paste in a thin layer without bubbles
- 🌬️ Clean the fan blades from dust with compressed air
When assembling the heatsink, make sure it fits snugly against the chips. If the fit is uneven, the cooling efficiency will drop sharply and the laptop will constantly make noise.
What to do if the radiator screw does not come off?
If the screw gets stuck, do not use excessive force. Try placing a drop of penetrating lubricant (such as WD-40) on the threads and wait 10 minutes. Also check to see if the heat pipe itself is jammed due to overheating.
Regularly replacing thermal paste every 2-3 years is the most effective way to reduce processor temperature by 10-15 degrees.
Replacing RAM and storage
Laptop upgrade Lenovo G505 often limited to installing faster memory or upgrading to a solid state drive. This significantly speeds up system boot and application work.
Slots for RAM located under a metal protective plate. To access them you need to unscrew a few screws and remove the screen. The RAM in this laptop supports the DDR3L standard.
To remove the memory stick, move the metal tabs along the edges of the slot apart. The bar itself will rise at an angle of 30 degrees, after which it can be easily removed.
To replace the hard drive, unscrew the four screws holding the metal HDD cage. Gently pull the cage towards you to disconnect it from the SATA connector.
- 💾 The maximum amount of memory supported by the system is 16 GB
- 🚀 Installing an SSD instead of a HDD gives a 5-7 times speed increase
- 🔧 Use an adapter to install an M.2 SSD into the HDD bay
When installing a new drive, it is important not to confuse the connection direction. The SATA connector has an asymmetrical shape, so it is impossible to insert the cable incorrectly unless you apply reasonable force.
☑️ Instructions for replacing the drive
Before installing a new SSD, it is recommended to create a bootable USB flash drive with a Windows image in advance so as not to waste time setting up the network after replacing the drive.
Component compatibility table
Below is a table with the main characteristics of components that can be installed in Lenovo G505. This data will help you avoid mistakes when purchasing spare parts.
| Component | Interface type | Max. Volume/Speed | Installation Features |
|---|---|---|---|
| RAM | DDR3L 1600 MHz | 16 GB (2 slots) | Only voltage 1.35V (Low Voltage) |
| Hard drive | SATA 3.0 (6 Gb/s) | 2.5 inches, up to 2 TB | Thickness 9.5 mm, adapter frames required |
| SSD drive | SATA 3.0 | Up to 1 TB (2.5" format) | Requires replacement of standard HDD |
| Processor | Socket FM2 | A8-5550M, A10-5750M | Difficult to replace, requires re-soldering |
Pay special attention to memory voltage. Regular DDR3 (1.5V) may not work or cause instability in the system, so look for the markings DDR3L.
It is also important to consider the physical size of the hard drive. Standard models are 9.5mm thick, but modern thin SSDs are often 7mm thick. In this case, plastic spacers may be included.
⚠️ Warning: Installing a processor with a different socket or incompatible frequency may result in the laptop being unable to turn on even after returning the original chip.
Installation and final assembly
After completing all the necessary manipulations with the internal components, the reassembly stage begins. Follow the same sequence of steps as for disassembly, but in reverse order.
First of all, connect the cables: keyboard, touchpad and, of course, battery. Make sure each connector is inserted all the way and that the locking clip snaps into place. This is a critical point for stable operation.
Install the bottom cover, gently pressing on the corners until you hear the characteristic clicks of the latches. After this, tighten all the screws, being careful not to overtighten them, so as not to strip the threads in the plastic case.
Before turning on for the first time, check whether there are any unnecessary parts left inside the case. Extra screws or pieces of plastic can short circuit or damage the fan blades.
- ✅ Check the connections of all cables before screwing on the cover
- 🔋 Make sure the battery is connected to the board
- 🔊 Test the fan operation immediately after turning it on
If the laptop does not respond after turning on, check whether you forgot to connect the main battery or power cable. Sometimes the problem lies in simple inattention.
Correct assembly and connection of all cables is the key to long-term operation of an updated laptop without sudden shutdowns.
Frequently asked questions and answers
Is it possible to replace the processor in Lenovo G505?
Technically, the processor in this model is soldered to the motherboard, so its replacement is only possible in a service center using special equipment for BGA soldering. This is not economically feasible for most users.
What is the maximum amount of RAM supported by the G505?
Officially, the manufacturer claims support for up to 16 GB of memory. However, in practice, some users have successfully installed 20 GB (one 16 GB and one 4 GB), but the stability of this configuration depends on the revision of the motherboard.
Do I need to reset the BIOS after replacing components?
Typically, resetting the BIOS is not necessary when replacing memory or hard drive. However, if you have changed the processor or encountered boot errors, it is recommended to reset the CMOS settings by shorting the BIOS battery contacts on the motherboard.
Why does my laptop get very hot after disassembling?
The most common reason is poor contact between the heatsink and the processor or the use of low-quality thermal paste. It is also possible that the fan was damaged during assembly or the fan power cable was twisted.