Laptop Overheating: Causes and Safe Ways to Cool It Down

01Quick answer

A laptop overheating usually means it can’t move hot air out fast enough: the vents are blocked by a soft surface or dust, it’s working hard on a demanding task, or it’s sitting in a warm room or direct sun. Use it on a hard, flat surface, keep the vents clear, close demanding apps and check your power settings. This guide is for Windows laptop and MacBook owners whose laptop runs hot, has loud fans or shuts down unexpectedly.

02Before you start

• Some warmth is normal. Laptops get warm when charging, updating or running demanding apps, and fans speed up to cope. Overheating means it’s uncomfortably hot, the fans roar constantly, or it slows down or shuts off.
• Find the vents. Look at the sides, back and underneath. Your manual shows where air comes in and goes out.
• Never block or poke into the vents, and don’t open the case to clean inside. Internal cleaning is a job for a repair service.

03Why this happens

Usually simple to fix:

• The laptop is on a bed, sofa, cushion or lap, which blocks the vents underneath.
• Dust and lint have built up on the vent openings.
• A demanding app, many browser tabs or a background update is working the processor hard.
• The room is hot, or the laptop is in direct sunlight.
• A power setting favours maximum performance over cooler running.

Needs the manufacturer or a repair service:

• Dust has built up inside, or the internal fan has failed (fans that never spin or make grinding noises).
• The laptop shuts down from heat even when idle on a desk.
• The battery is swollen, which can also make the case bulge or the touchpad lift.

04Cool it down now

1. Save your work and move the laptop to a hard, flat surface like a desk or table, with space around the vents.
2. Close apps you aren’t using, especially games, video editors and browsers with many tabs.
3. Let it rest. If it’s very hot, shut it down and let it cool before using it again.
4. Check what’s working hard. - Windows: press Ctrl, Shift and Esc to open Task Manager and sort by CPU to see which apps use the most processing power. - Mac: open Activity Monitor from Applications, then Utilities, and look at the CPU tab.

   What you should see: after closing heavy apps, fan noise should settle within a few minutes. If an app you don’t recognise is using a lot of power, run a scan with Windows Security or keep macOS up to date, and look up the app’s name on its developer’s official website.

05Keep it cooler day to day

1. Clean the vent openings with the laptop shut down and unplugged. Use a soft brush or dry cloth on the outside of the vents only.
2. Raise the back slightly on a hard surface, or use a laptop stand, so air can flow underneath.
3. Choose a balanced power mode. On Windows, open Settings, System, then Power & battery (or the battery icon on Windows 10) and pick a balanced or recommended mode rather than best performance. Microsoft’s battery tips explain the options.
4. Keep software up to date. Updates to Windows, macOS and your laptop maker’s tools can include fixes for power and fan behaviour.
5. Avoid hot places, such as a car on a sunny day or next to a heater.

06Signs to watch for

Heat problems often build up slowly, so it helps to know what is normal for your laptop.

• Normal: warmth near the vents during video calls, updates or charging, and fans that speed up and then settle.
• Worth acting on: fans that run loudly with only a browser open, a keyboard or underside that’s uncomfortable to touch, or the laptop becoming slow after a few minutes of use.
• Stop and get help: sudden shutdowns, a burning smell, a bulging case or a touchpad that has started to lift.

07Common mistakes to avoid

• Using the laptop on a bed or duvet for long periods.
• Spraying liquids or using a vacuum cleaner nozzle directly on the vents.
• Installing third-party fan control or “PC booster” tools from unofficial sites.
• Ignoring constant loud fans, which can be an early sign of a dust or fan problem.

08If it still doesn’t work

If the laptop overheats on a hard surface with only light use, shuts down from heat, or the fans are silent, grinding or always at full speed, contact the manufacturer through its official support website or a qualified repair service. Internal cleaning and fan replacement need proper tools. If heat comes with very slow performance, our slow computer guide may help, and if your laptop now refuses to start, see our guide to a laptop that won’t turn on.

09The short version

Give the laptop a hard surface and clear vents, close heavy apps, and use a balanced power mode. Clean only the outside of the vents. Persistent heat, shutdowns or noisy fans need the manufacturer or a repair service.

10FAQ

Is it normal for my laptop to get hot while charging?

Some warmth while charging is normal, especially when you’re also using the laptop heavily. It shouldn’t be too hot to touch. If it is, unplug it, let it cool on a hard surface and contact the manufacturer if it happens again.

Do laptop cooling pads help?

A stand or cooling pad can improve airflow under the laptop, especially if it draws air in from underneath. It won’t fix internal dust or a failing fan, so treat it as a help rather than a cure.

Why are my laptop fans so loud?

Fans speed up when the processor is busy or the vents are blocked. Check Task Manager or Activity Monitor for heavy apps and make sure the vents are clear. Constant loud fans with light use may mean dust inside.

Can overheating damage my laptop?

Laptops protect themselves by slowing down or shutting off when too hot, but regular overheating isn’t good for the battery or other parts. Keeping the vents clear and the laptop on a hard surface helps it last.