Spilled liquid on your laptop? What to do in the first hour

Quick answer: what to do in the first minute

Do these things in this order, as fast as you can, even before you start worrying about your files:

1. Cut the power. Press and hold the power button for several seconds until the screen and lights go off. Do not wait for Windows to shut down properly.
2. Unplug the charger from the laptop and from the wall. If you are charging from a power bank or inverter, disconnect that too.
3. Remove everything plugged in: flash drives, external hard drives, mouse dongles, memory cards, headphones.
4. Take out the battery only if it is the removable kind (a few older laptops have a latch underneath). Do not open the laptop yourself to find the battery.
5. Drain the liquid. Turn the laptop upside down in a tent shape, open about 90 to 120 degrees, keyboard facing down, on a towel.

Everything else in this guide builds on those five steps. If you only do those, you have already given the laptop its best chance.

Why switching it off immediately matters so much

Liquid on its own does little harm to a switched-off board. The damage happens when power flows through wet circuits. Current finds new paths through the liquid and can burn out tiny components, usually the ones that control charging and power. Once they are damaged, the laptop may not start at all, even though the processor, memory and drive are untouched.

That is why the temptation to press the power button "just to see" is the single most expensive mistake people make. If the board is wet, you are testing it with live current. A laptop that could have been dried and cleaned for a modest repair can turn into a board-level repair.

Also remember the charger. The charging port sits right next to the board, and liquid that ran in through the keyboard can reach it. Plugging in the charger to see whether the light comes on does the same harm as switching on the laptop.

How to drain and dry the outside safely

Work calmly and gently. You are trying to let gravity pull liquid out of the keyboard, not push it deeper.

1. Open the lid and turn the laptop upside down, so it stands like a tent with the keyboard facing the table. Put a dry towel underneath.
2. Leave it like that. Do not shake it. Gentle tilting is enough.
3. With a dry, lint-free cloth or paper towel, dab (do not rub) the outside, the keyboard and around the ports. Press the cloth against the gaps between the keys to soak up what you can reach.
4. Wipe the screen and the lid if they are wet. Do not use any cleaning fluid.
5. Keep the laptop in this position for a few hours while you arrange to have it looked at.

Do not try to pour in or spray anything to "rinse" the liquid out. Adding more liquid, even water, makes the problem larger. Do not pull keys off to look underneath unless you already know how your keyboard comes apart, because the clips break easily and the keyboard may then need replacing.

What never to do after a spill

• Do not use a hairdryer, heater or direct sun. Heat can warp plastic, damage the screen and the battery, and push liquid further in before it has evaporated. It also bakes sugar into sticky residue.
• Do not put it in rice. Rice does not pull liquid out of a laptop. It leaves dust and starch behind, and the time you spend on it is time the liquid spends corroding the board.
• Do not charge it, even "briefly".
• Do not press the power button to test it, including after an hour or two. If you intend to test it yourself later, see the section below on minor splashes.
• Do not use alcohol, perfume, sanitiser or cleaning sprays on the keyboard or the board. They carry their own risks and do not clean sticky residue.
• Do not open the laptop yourself unless you already know how. Screws are different lengths, ribbon cables tear, and the battery inside is a hazard if it is damaged. Never open or press on a battery that looks swollen.

Does the type of liquid make a difference?

A great deal. Roughly from the kindest to the worst:

• Clean water is the least harmful. Even so, tap water carries minerals, and a large spill still needs checking.
• Tea or coffee without sugar leaves some residue and is acidic, so treat it more seriously than water.
• Soft drinks, juice, malt drinks, zobo, tea with sugar or milk are sticky. When they dry they leave sugar that attracts moisture and keeps corroding contacts. Keys also start sticking. These spills need a proper professional clean soon.
• Salty liquids such as soup, sea water or sweat-heavy spills are very corrosive and conduct electricity easily. Treat them as urgent.
• Alcohol and oily liquids evaporate or smear in different ways, but still leave residue. Treat them as a spill that needs a check.

Tell the technician exactly what the liquid was. It changes how the cleaning is done.

A few drops of clean water: can I handle it myself?

Honesty first: if you are not sure how much liquid got in, assume it was more than you think. Liquid travels under the keyboard and you cannot see it. Having said that, a genuine splash of a few drops of clean water on the keyboard or palm rest, wiped away within seconds on a laptop that was off or closed, is a different situation from a cup tipped over a running laptop.

For a small clean-water splash, a sensible approach is:

1. Switch it off, unplug it and dab it dry as described above.
2. Leave it tented and ventilated for at least a day, longer if it was more than a few drops, in a dry room with air moving. No heat.
3. Switch it on without the charger plugged in. If it starts, back up your important files straight away, then use it for a day or two while watching for the warning signs below.

If it does not start, or shows any of the signs below, stop and take it to a technician. Do not keep trying.

Warning signs of delayed liquid damage

Many people breathe out after a spill because the laptop seems fine. Corrosion works slowly, and the fault can show up days or weeks later. Watch for:

• Keys that stick, repeat letters or stop working.
• A trackpad that jumps, clicks by itself or goes dead.
• The laptop shutting down on its own, or only working when plugged in.
• The battery not charging, or the charging light flickering.
• The fan running at full speed all the time.
• Ports that stop working, or a Wi-Fi or sound problem that did not exist before.
• A sweet smell or visible sticky patches around the keyboard.
• Black marks, patches or lines on the screen.

If you see any of these after a spill, switch it off and get it checked. The sooner corrosion is cleaned off, the smaller the repair.

What a technician does with a liquid-damaged laptop

A proper job is more than a quick wipe. The usual steps are:

1. Note what the liquid was and when it happened, and photograph the visible condition.
2. Open the laptop and disconnect the battery and cables.
3. Inspect the board and connectors for liquid, residue and corrosion, under magnification where needed.
4. Clean the board and connectors with suitable cleaning fluid and soft brushes, then dry it thoroughly.
5. Test the board, charging circuit and power rails before reassembly.
6. Replace damaged parts. A sticky or dead keyboard is often just replaced, because it is cheaper than cleaning every key. A damaged drive, battery or board component may also need replacing.
7. Run tests for a period afterwards, because liquid-damaged boards sometimes fail later.

Ask for a diagnosis and quote first, so you can decide whether to continue.

What about my files?

In many spills the storage drive is untouched, because it sits away from the keyboard. Even if the board is beyond repair, a technician can often connect the drive to another machine and copy your files. That is another reason not to power the laptop on repeatedly: a drive that is spun up and powered on a wet board can get hurt too.

Tell the technician your files matter more than the laptop and they will prioritise copying them. If the laptop is encrypted with BitLocker (common on newer laptops signed in with a Microsoft account), you will need your recovery key to get the files off. You can find it by signing in to your Microsoft account on another device and opening the Devices section of your account page, then choosing to view the BitLocker keys.

Once things are sorted, set up a proper backup. A spill is a harsh way to learn why, and it will not help the next time.

Getting it to the technician, and avoiding the next spill

Carry the laptop flat in a padded bag or wrapped in a dry cloth, and keep it switched off. Bring the charger, since technicians may need it for testing, and tell them what was spilled, how much and how long ago. Check whether you have accidental-damage cover through your warranty or insurance, because normal warranties usually do not include liquid damage.

To avoid a repeat: keep drinks on a different surface from your laptop, use a lidded bottle rather than an open cup, avoid eating over the keyboard, and consider a thin silicone keyboard cover if you work at a shared desk. Do not charge your laptop on a bed or sofa where drinks tend to be. And take the backup advice seriously.

Frequently asked questions

Written by the ICT AccessPoint team

We repair laptops and build websites and business systems. Have a question this guide did not answer? Message us.

This guide is general advice. Every device and business is different, so if you are unsure, ask a technician before you act.