How to return a broken button on a laptop: 5 proven methods

The laptop keyboard is one of the most vulnerable parts of the device. Even when used carefully, the buttons may fly out of the grooves, especially when it comes to frequently pressed keys like Space, Shift or Enter. The reasons are varied: from mechanical damage to wear of plastic latches. The good news is that in 90% of cases the button can be installed back without a soldering iron or specialized tools.

In this article you will find step by step instructions for different types of key mounts (scissor, butterfly, rubber domes), as well as tips on how to avoid falling out again. We will figure out when repairs are possible on your own, and when it is better to contact a service center. If you've never disassembled a laptop, don't worry: the process is easier than it seems if you know the key secret to fixing the mechanism (it is described in the section on scissor fastenings).

Why buttons fly out: main reasons

Before you begin repairs, it is important to understand why the key lost fixation. This will help prevent it from breaking again. Here are the most common reasons:

• 🔨 Mechanical impact: hitting the keyboard, dropping the laptop, or pressing a button at the wrong angle (for example, when the laptop is on your lap).
• 🧹 Pollution: Dust, crumbs or hair get under the keys, blocking their movement and deforming the mounts.
• ⏳ Plastic wear: Over time, the latches on the keys or scissor mechanisms become thin and break (typical for laptops over 5 years old).
• 🔥 Overheating: If the laptop frequently overheats, the plastic may deform and lose its rigidity.
• 🛠️ Incorrect assembly: After a previous repair, the key may have been installed crookedly, which led to it falling out.

Particularly vulnerable large buttons (space, Enter, Shift), as they are under heavy load. Their metal stabilizer often breaks - a thin wire that evenly distributes pressure when pressed. If you notice that the key falls through or gets stuck, the problem most likely lies there.

⚠️ Attention: If the button comes off after being exposed to liquid, do not try to put it back! First dry the keyboard (minimum 24 hours) and check the contacts for corrosion. Moisture can cause a short circuit.

Types of key mounts: how to determine yours

Not all buttons on a laptop are attached equally. The repair method depends on the type of mechanism. Here are the three main types:

Mounting type	Appearance	Where is it found?	Difficulty of repair
Scissor mechanism	Two plastic brackets connected crosswise	Most modern laptops (Lenovo ThinkPad, Dell XPS, HP Pavilion)	Average
Butterfly	Plastic frame with latches on the sides	Old models (Acer Aspire, Asus K-series), some MacBook until 2015	Light
Rubber dome	Soft silicone backing with conductive layer	Budget laptops, netbooks, some Chromebook	Difficult (requires care)

To determine the mounting type of your key, carefully look at the back of the button. If you see two plastic “legs” with grooves, this is a scissor mechanism. If the button sits on four latches - a butterfly. Rubber domes are usually noticeable by the soft backing under the key (it can be seen if you remove the adjacent buttons).

Preparing for repairs: tools and precautions

Before starting repairs, prepare everything you need. You will need:

• 🔧 Flat head screwdriver (or a pick) for prying up the keys.
• 🧲 Magnet (so as not to lose small details).
• 📸 Smartphone for photographing the process (useful if you forget the assembly order).
• 🧴 Alcohol wipes for cleaning contacts.
• 🔍 Magnifying glass or flashlight (small details are difficult to see with the naked eye).

Protect yourself and your laptop:

1. Turn off your laptop and disconnect the battery (if it is removable). If the battery is built-in, just turn off the device and wait 5 minutes (this will discharge the residual current).
2. Work for flat, clean surface (it’s better to cover the table with a light cloth so you can see the fallen parts).
3. Don't use force! If the key does not snap into place, it means you missed the step of fixing the mechanism.

⚠️ Attention: If your laptop is under warranty, repairing the keyboard yourself may void it. Check the conditions at the service center manufacturer.

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

Scissor mounts are the most common, but also the most capricious. The main mistake of beginners is trying to immediately put the key on the mechanism. Actually first the scissor structure is fixed, and then the button itself. Follow the algorithm:

1. Remove the key: if it still holds, carefully pry it off from the side with a screwdriver. Press down on the top edge and pull up. Don't pull on the center - you'll break the latches!
2. Explore the mechanism: Under the key you will see two plastic brackets (top and bottom), connected crosswise. They must be parallel to each other.
3. Secure the bottom bracket: its protrusions are inserted into grooves on the keyboard. Make sure it fits snugly and doesn't wobble.
4. Install the top bracket: its latches should fit into the grooves on the key. Needed here key point: the upper bracket must be turned perpendicular to the lower one (like the letters “X” and “+” superimposed on each other).
5. Put on the key: Gently press the top of it until you hear a click. If the button fails, the mechanism is assembled incorrectly.

For large keys (Space, Shift) check additionally metal stabilizer - a thin wire that goes under the button. It should lie flat and not cling to the scissor mechanism. If the wire is bent, carefully straighten it with tweezers.

Repair of butterfly keys

Butterfly mounts are easier to repair because they have no moving parts. The main thing is to correctly orient the latches. Algorithm of actions:

1. Remove the button: pry it from one edge and pull it up. The butterfly usually comes out with the key.
2. Check the latches: there should be four “ears” (two pairs) on the plastic frame. They often break if removed carelessly.
3. Place the butterfly in place: its protrusions should fit into the grooves on the keyboard. Focus on the adjacent buttons - their fastenings will help you understand the correct position.
4. Put on the key: press it from above until it clicks. If the button wobbles, it means that the latches are not fully seated in the grooves.

If the "ears" on the butterfly are broken, you can try restore them with superglue (be careful not to get on the contacts!). However, this is a temporary solution - over time, the glue will crumble and the button will fly out again. For long-term repairs, it is better to replace the mount (they are sold at AliExpress or at service centers).

What to do if the latches are broken?

If the plastic “ears” on the butterfly have broken off, you can try gluing them with two-component epoxy glue (for example, “Moment Epoxin”). However, keep in mind that after this the key may become difficult to move. An alternative is to buy a new mount (costs ~100–300 rubles).

How to fix a rubber dome button

Rubber domes are the most difficult to repair, as they require precision. It is important here not only to set the key, but also preserve the conductive layer on a substrate. Instructions:

1. Remove the key: pry it off with a screwdriver. Underneath it you will see a silicone dome with a black spot (conductive layer).
2. Clean contacts: Wipe both the dome and the metal tracks on the board with an alcohol wipe.
3. Check the canopy: if it is torn or has lost elasticity, it needs to be replaced. New domes are sold in sets (for example, for Chromebook or Acer Swift).
4. Set the key: Carefully place it on the canopy, making sure it sits evenly. Press all the way and you should hear a click.

If after installation the button doesn't work when pressed, the problem may be:

• 🔌 Oxidized contacts (need to be cleaned with an eraser or alcohol).
• 🧽 Damaged conductive layer of the dome (replacement required).
• 🔧 Incorrectly installed key (check if the dome has moved).

What to do if the button does not lock: common mistakes

Even if you followed the instructions, the key may not hold on or work incorrectly. Here are common mistakes and their solutions:

Problem	Reason	Solution
The button is wobbly	Not all latches fit into the grooves	Remove the key and check the symmetry of the fastening
The key fails	Broken scissor mechanism or stabilizer	Replace the mount or straighten the stabilizer wire
The button is not pressed	Dirt under the dome or oxidized contacts	Clean the contacts and dome with alcohol
The key clings to neighboring ones	Stabilizer installed crookedly	Gently straighten the wire with tweezers

If you Tried to install the button several times, but it still falls outThe problem may be due to worn grooves on the keyboard. In this case it will help:

• 🔧 Replacing the keyboard (extreme case if the fastenings cannot be restored).
• 🧩 Using glue (temporary solution, may ruin the mechanism).
• 🛒 Buying a new key (on AliExpress or service centers sell separate buttons).

When is the best time to contact a service center?

Not all breakdowns can be fixed on your own. Contact a specialist if:

• 💻 Broken keyboard board (damaged tracks or oxidation visible).
• 🔥 The laptop was filled with liquid (even if the button is in place, the contacts may need to be cleaned).
• 🔧 Several keys fell out (this may indicate a systemic problem, such as warp in the base).
• 🔄 The key crashes again after several repair attempts.

The cost of repairs in the service depends on the problem:

• Replacing one key - from 300 to 800 rubles.
• Scissor mechanism repair - from 500 to 1200 rubles.
• Replacing the entire keyboard - from 1500 to 4000 rubles (depending on the laptop model).

If your laptop is under warranty, repairs may be free (check conditions with the manufacturer). For Apple MacBook with keyboard Butterfly (2015-2019) Free replacement program available - check website for serial number Apple.

FAQ: answers to frequently asked questions

Is it possible to fix a button without removing the keyboard?

Yes, if the problem is only in the fastening of the key (scissor mechanism or butterfly). However, if the latches on the keyboard itself are broken or the contacts are oxidized, you will have to disassemble the laptop. For most models (Lenovo IdeaPad, HP Pavilion) the keyboard can be easily removed - just unscrew a few screws on the bottom cover.

How to remove a key if it cannot be pryed off with a screwdriver?

Use plastic spatula (sold in phone repair kits) or mediator. If the button is too tight, gently heat it with a hairdryer (no higher than 50°C) - the plastic will become softer. Do not use force, otherwise you will break the latches!

What should I do if after repair the button works only once?

Most likely the problem is oxidized contacts or damaged conductive layer of the dome. Try:

1. Remove the key and wipe the contacts with alcohol.
2. Check if the rubber dome is torn (replace if necessary).
3. Make sure the scissor mechanism or butterfly is level.

If all else fails, the key or keyboard board is damaged and needs replacement.

Where to buy spare parts for keyboard repair?

Spare parts are sold at:

• AliExpress (search by laptop model + "keyboard key").
• Avito or Yula (they often sell used keyboards for disassembly).
• Service centers (sometimes sell parts separately).
• Specialty stores (for example, "Chip and Dip" for electronics).

The cost of one key is from 50 to 500 rubles, the scissor mechanism is from 100 to 300 rubles.

How can I prevent buttons from falling out in the future?

To make the keys last longer:

• 🧹 Clean your keyboard regularly from dust (use compressed air cylinder or vacuum cleaner at minimum power).
• 🖥️ Do not press buttons from the side or at an angle.
• 🚫 Avoid eating while using your laptop (crumbs and liquids are the main enemies of the keyboard).
• 🔄 If you notice that the key has started to wobble, immediately tighten it (without waiting for it to fall out).