How to attach a button on a laptop keyboard: a detailed guide with photos and tips

The laptop keyboard is one of the most vulnerable parts of the device. Even with careful use, buttons can fall out due to mechanical damage, careless cleaning or wear of the fasteners. If your key falls off, do not rush to take your laptop to a service center: in most cases, you can install it back yourself in 5–10 minutes. The main thing is to know the design of the mechanism and act carefully.

In this article we will figure out how to properly attach a button to a laptop keyboard for different types of fastenings (scissor, butterfly, rubber domes), what tools are needed and how to avoid common mistakes. You will also learn what to do if the key does not lock or does not work correctly after installation. Instructions will fit most models Lenovo, HP, Dell, Asus, Acer and other brands.

Types of button mounts on laptops: how to determine yours

Before you begin the repair, you need to understand what type of mechanism is used in your keyboard. The installation process depends on this. There are three main types of fastenings:

• 🔧 Scissor mechanism - the most common type. The button is attached to two plastic “scissors”, which are fixed on the keyboard board. Used in most modern laptops (MacBook, Lenovo ThinkPad, HP Pavilion).
• 🦋 Butterfly mechanism - a simplified version of the scissor fastening, where plastic elements are connected into a single structure. Often found in ultrabooks (Apple MacBook 2015–2019, some models Dell XPS).
• 🎲 Rubber domes - an outdated type, where the button presses on a silicone dome, which closes the contacts. Used in old laptops (IBM ThinkPad early 2000s, some Acer And Toshiba).

To determine the type of mechanism, carefully pry the adjacent keys (for example, Shift or Space) with a flat screwdriver and look at the design. If you see two plastic staples, this is a scissor mechanism. If one part is in the shape of a butterfly, then the mechanism is “butterfly”. Rubber domes are usually immediately noticeable: there will be a soft black or gray backing underneath the button.

Please note: some laptops (eg. Microsoft Surface or Razer Blade) hybrid mechanisms or non-standard fastenings are used. If your keyboard is one of these models, it is better to contact a service center to avoid damaging the device.

Tools needed for repairs

To install the back button, you don’t need professional tools—what’s found in every home is enough. Here is the minimum set:

• 🔧 Flat head screwdriver (small, for example, for glasses) - to pry the key and fix the mechanism.
• 🧲 Magnet or tweezers - will help not to lose small parts (springs, staples).
• 📸 Smartphone with camera — take a photo of the disassembly process so as not to confuse the assembly order.
• 🧴 Alcohol wipes — to clean contacts if the button is stuck.
• 🔦 Flashlight or table lamp — good lighting will make it easier to work with small details.

If the key is broken (for example, the plastic bracket is cracked), you may need to glue for plastic (For example, Loctite Plastics Bonding System) or spare button. You can buy it at AliExpress, eBay or at service centers. Please indicate your exact laptop model when searching!

⚠️ Attention: Do not use metal screwdrivers without insulation - they can short circuit the contacts on the board and damage the keyboard. It is better to wrap the sting with electrical tape or use a plastic pick.

Take a photo of the keyboard before disassembling|

Unplug the laptop and remove the battery (if removable)|

Prepare a clean work area with good lighting|

Check for pets nearby (they may steal small parts) -->

Step-by-step instructions: how to install a scissor button

The scissor mechanism is the most common, so let's start with it. Follow the instructions carefully to avoid breaking the plastic staples.

1. Remove the key. If it has already fallen out, skip this step. If not, pry it out from the side with a flathead screwdriver, pressing upward. Start at the corner where the button is least used (eg. PgUp or Insert).

2. Study the mechanism. Under the button you will see two plastic brackets (top and bottom) connected crosswise. They are fixed on four protrusions of the keyboard board.

3. Install the bottom bracket. Carefully insert it into the slots on the board so that the protrusions fit into the holes. It should “sit down” with a slight click.

4. Secure the top bracket. Place it on the bottom crosswise. Make sure all four "tendrils" fit into the grooves.

5. Click on the button. Place it on top and press evenly until it clicks. If the button does not lock, check whether the brackets are installed correctly.

If the button Space or Shift has additional metal stabilizers (thin wires on the sides), first secure them to the board, and then install the key itself. Stabilizers must fit into the grooves without distortion.

What to do if the staples are broken?

If the plastic staples are cracked, they can be temporarily fixed with superglue (apply pointwise!). However, this is a short-lived solution - it is better to order new brackets or the entire key. For MacBook and some Dell Repair kits with spare parts are sold.

Button type	Installation Features	Common mistakes
Regular keys (A, B, 1)	Two brackets, installed crosswise	Skewed staples, incomplete fixation
Large keys (Space, Shift)	Additional stabilizers (wires)	Stabilizers are not inserted into the grooves
Keys with LEDs (Caps Lock)	Check the integrity of the backlight contacts	Pinched backlight wires
Function keys (F1–F12)	Often have additional springs	Loss of springs during disassembly

Installing a button with a butterfly mechanism

The butterfly mechanism is simpler than the scissor mechanism, but requires caution - the plastic elements are fragile and break easily. This type of mount is often used in thin laptops where compactness is important.

Installation algorithm:

1. Remove the button by prying it from the side. The butterfly mechanism usually does not have separate brackets - the entire structure is a single plastic part.

2. Check the integrity of the mechanism. If the butterfly's "wings" are cracked, the key will not hold. In this case, replacement will be required.

3. Install the mechanism on the board. It should “sit” on four ledges. Be guided by the shape - usually there are small guides on the butterfly.

4. Click on the button above. It should click into place without effort. If you have to press, the mechanism is installed incorrectly.

In laptops Apple MacBook (2015–2019) the butterfly mechanism often fails due to dust. If the button cannot be pressed or is stuck, try blowing out the keyboard with compressed air or cleaning the mechanism with alcohol. In extreme cases, the entire keyboard will need to be replaced.

⚠️ Attention: B MacBook Pro 2016–2019 Apple used second-generation butterfly mechanisms with a silicone membrane. Repairing them yourself may void your warranty. The official service replaces such keyboards free of charge under the recall program.

What to do if the button does not lock or does not work correctly

Sometimes after installation the button falls out again, gets stuck or is difficult to press. Let's look at typical problems and their solutions:

• 🔄 The button drops out when pressed — most likely, the mechanism has not fully latched. Remove the key and check that all the tabs are in the grooves. In a scissor mechanism, the top bracket is often not fixed.
• 🛑 The key is not pressed — there may be debris or dust left under the mechanism. Blow the area gently with compressed air or clean with alcohol.
• 🔊 The button creaks or makes strange noises — lubricate the mechanism with silicone grease (do not use WD-40!). Apply a minimal amount so as not to flood the contacts.
• 💡 Key backlight does not work — check the integrity of the LED and contacts. If the wires come loose, soldering will be required.

If the problem persists, the keyboard board may be damaged. In this case, only replacing the keyboard or contacting service will help. For diagnostics, connect an external keyboard to the laptop using USB - if it works, the problem is definitely in the hardware.

How to glue a button if the mechanism is broken

If the plastic brackets or butterfly mechanism are cracked and you don’t have a new part at hand, you can temporarily fix the button with glue. This method is not ideal, but it will help you use your laptop until it is repaired.

Step by step instructions:

1. Clean the surface of the button and board from dust with an alcohol wipe. There should be no grease and dirt left - they will worsen the grip.

2. Apply minimal amount of glue (For example, Loctite 401 or Super-Moment Gel) on the base of the mechanism, and not on the key itself. Avoid getting glue on the contacts!

3. Press the button for 10–15 seconds. Do not press too hard to avoid squeezing the glue into the mechanism.

4. Let the glue dry for 1-2 hours. Do not use your laptop during this time.

Please note that after such repairs the button may be pressed harder, and over time the glue will lose its properties. For a long-term solution, it is better to replace the mechanism or key.

⚠️ Attention: Do not use glue on backlit buttons; it may damage the LEDs or contacts. In this case, it is better to immediately order a new part.

Prevention: how to avoid keyboard breakdowns

To prevent buttons from falling out in the future, follow these simple rules:

• 🧹 Clean your keyboard regularly. Dust and crumbs get trapped under the buttons and interfere with their operation. Use compressed air (a can) or a soft brush.
• 🚫 Don't eat while on your laptop. Crumbs and liquids are the main enemies of the keyboard. If you spill a drink, immediately turn off the power and dry the device.
• ⌨️ Don't hit the keys. Strong impacts break the plastic brackets. Press the buttons smoothly, without unnecessary effort.
• 🔧 Do not disassemble the keyboard unless necessary. Each time you remove the button, you increase the risk of the mechanism breaking.

If you often work in dusty conditions (such as a construction site or workshop), use silicone keyboard case. It will protect the mechanisms from dirt and moisture, and also soften shocks when pressed.

FAQ: answers to frequently asked questions

Is it possible to attach a button without tools?

Yes, if the mechanism is intact. You can pry the key with your fingernail or a plastic card, and then click it back with your hands. However, for reliability, it is better to use a screwdriver - this way there is less risk of breaking the staples.

What should I do if the button is pressed but does not work?

Most likely the problem is in the contacts on the board. Try cleaning them with alcohol. If this doesn't help, check your keyboard in Notepad or Word — the drivers may have gone astray. In extreme cases, the keyboard will need to be replaced.

Where to buy spare buttons for a laptop?

Spare keys and mechanisms are sold at AliExpress, eBay, in stores like "Chip and Dip" or service centers. Please indicate the exact laptop model (for example, Lenovo ThinkPad T480) and the keyboard part number (usually indicated on the back).

Is it possible to wash a laptop keyboard?

It is strictly forbidden to wash the keyboard under water! For cleaning, use damp alcohol wipes or compressed air. If the keyboard is very dirty, it is better to remove it completely and wipe each mechanism separately.

How much does it cost to replace a keyboard at a service center?

The cost depends on the laptop model. For budget devices (Acer, Asus>) replacement costs 1,500–3,000 rubles. For premium (MacBook, Dell XPS) - from 5,000 to 15,000 rubles. In some cases, it is cheaper to buy a new keyboard and install it yourself.