How To Fix An Overheating Laptop

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fix an overheating laptopLaptops have undergone an incredible amount of development over the past couple of years. A steep increase in performance was facilitated by chips that are ever more densely packed with transistors. In parallel, the amount of processors was multiplied, the hardware was put into slimmer cases, and better graphics cards enabled bigger screens with higher resolutions. These developments, however, come at a cost: heat.

The greatest threat for your laptop, except for your your coffee mug, is overheating. It can cause hardware failure and permanent damage. In this article I will introduce ways that you can prevent or fix an overheating laptop and thus improve the performance and the extend the lifespan of your laptop.

How Do You Know Your Laptop Is Overheating?

A sure sign that your notebook gets too hot is when your fan always runs at maximum speed. You may also experience reduced performance because the CPU cuts back its clock speed to escape heat pressure. Moreover, the fail safe software may trigger a sudden shutdown to prevent hardware damage.

fix an overheating laptop

Refer to the article 3 Laptop Computer Temperature Monitor Apps That Could Save Your Hard Drive to find out how you can measure the actual heat values inside your laptop.

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What Causes Overheating?

In two words: insufficient cooling.

The reasons include dust blocking intake grills or exhaust ports, a clocked up fan, or a degenerated thermal grease (aka thermal compound) between the heat sink and the CPU.

How Can You Prevent or Fix an Overheating Laptop?

There are several hardware fixes that can cure overheating.

1. Fix Internal Cooling

The first and most important thing you need to do when your laptop is overheating, is to clean the fan/s that provide/s cooling to the CPU and graphics card. Over time they build up layers of dust and dirt that slow them down and block flow of air. Consult your laptop’s manual or manufacturer to find out how you can open the laptop to access and clean these parts.

Before you attempt to do any cleaning, however, follow these steps:

  • shut down the computer.
  • remove the battery.
  • unplug the power strip.
  • ground yourself

Carefully clean the fan/s with a cotton swab dipped in a drop of alcohol. Make sure the alcohol has completely evaporated before you reconnect the laptop to the power. You can also use a vacuum cleaner to remove the dust and dirt that clocks up the fan/s. To prevent damage to the fan, do not let it revolve in the wrong direction. If you want to use canned air to clean the fan, arrest the fan by holding it down.

laptop keeps overheating

Next, you can clean the exhaust port by sucking out air with a vacuum cleaner. The exhaust port usually sits on the side of the laptop. It’s the opening that blows out hot air.

The intake grills are small openings that allow air to be sucked into the laptop by the revolving fans. They can sit on the sides or at the bottom of your notebook. To clear the intake grills, spray them with canned air.

Finally, you can apply fresh thermal grease to the interface between the CPU and its heat sink. Again, please consult the laptop’s manual or manufacturer to obtain instructions on how to disassemble these components.

Inside My Laptop has some great tutorials on how to fix your laptop, including How to apply thermal grease on laptop processor.

2. Keep The Laptop On A Hard & Flat Surface

Most laptops suck in cooling air through their bottoms. If the laptop sits on an uneven surface like a blanket, pillow, or your lap, the flow of air into the laptop is disturbed. Subsequently, the cooling is not optimal, heat builds up, the surface becomes hot, the temperature of sucked in cooling air increases, and eventually the laptop overheats.

This scenario is easily avoided by keeping the laptop on a hard and flat surface. You can use something as simple as a tray or get a special laptop holder or lap stand.

3. Invest In A Laptop Cooler

Laptop coolers are meant to provide additional cooling. However, getting the wrong cooler can actually make the problem worse. Before you purchase a cooler, you need to understand the flow of air into and out of your laptop.

fix an overheating laptop

As mentioned above, most laptops suck in air for cooling from the bottom. This makes sense because warm air rises upwards. However, a cooler that sits underneath the laptop and sucks air away from it, does not contribute to laptop cooling and rather causes a more rapid overheating.

If your laptop has intake grills at its bottom, purchase a cooler that blows cool air upwards, i.e. into the laptop. You can also get a passive cooler that does not consume power and merely absorbs heat.

What Are Potential Software Fixes?

If none of the hardware fixes result in lasting improvements, you can also revert to software fixes that address the performance and power usage of your laptop. However, addressing excessive heat with a software fix means you give up performance in favor of preserving the hardware.

You can either reduce the brightness of your screen or reduce the CPU clock speed. In Windows, underclocking or undervolting is done in the BIOS, but can also be controlled through software tools. Consult the Undervolting Guide on the Notebook Review forum for more information about this procedure.

The Top 3 Signs Your Laptop Is Overheating

Finally, let’s lighten this up a little. This list was inspired by a Top 11 list on BBSpot.

  • You’ve downclocked the CPU so much that the Commodore 64 team is overtaking you on Folding@Home
  • Frodo tosses the one ring into your keyboard.
  • Al Gore shows up to kick your ass.

How often do you clean your laptop to prevent it from overheating? Do you have any additional tips and tricks to share?

Image credits: Steve CukrovSergej Khakimullin,  Olga PopovaJiri Pavlik

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Comments (22)
  • Michael Weldon

    I’m using a 13-yr old Dell Inspiron… original 1100. It runs a DESKTOP P4, which generates a lot of heat! Now, these old girls were quite bulky by today’s standards, and consequently there’s a lot more space inside of them for the air to circulate.

    One trick I use, in addition to always using her on a flat surface, is as follows:-

    1) Junk the standard rubber feet. These only give give millimetres of clearance, at best.

    2) Replace them with what are known to DIY-ers as ‘bump stops’. They’re easily available in most hardware stores; are about 10 mm tall, self-adhesive, and simply press into place. They’ll raise your laptop a lot further off the deck, giving more clearance, and ensuring that there’s plenty of room for air to circulate.

    The P4 pulls 63W TDP…..and usually runs at or around 50/55C. Which for that high a TDP, is quite acceptable. You have to remember, mobile , ultra-low-power CPUs weren’t even on the drawing board in those days…..

  • Human Being #89683

    Al Gore shows up to kick your ass
    my frend told me what it meant. She was like, WTF.

  • neil

    cool this will help us.

  • Macfan95

    I use smcFanControl on my macbook. I like it because it puts a little icon on the menu bar that tells what the temperature is and how fast the fan is going. Also you can make your own settings for it, for example, I have a default setting (which uses whatever the computer itself wants to use depending on the temperature), then I have a “HigherRPM” setting (Makes the fan go at about 4,000RPM for the more heavy apps like iMovie and Garageband), then lastly I made a “Gaming” setting that clocks the fan as fast as it can go for the heavy games like Call of Duty.

  • Bradley Wint

    hmm dell doesnt seem to have put that shut down feature in their recent XPS models. Rather it just starts to lag like crap. My 1640 constantly overheats but the problem is the poor positioning of the fan exhaust, plus with an overclocked video card (overclocked by Dell)… it’s even worse. Bought a Zalman NC2000 cooling pad and it solved the problem. The unit itself remained cool, but the exhaust still pushed out some hot air…nonetheless the temp was regulated very well even in intense games. Undervolting is a good idea but remember if you get BSODs, you’re undervolting too much.

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This review may contain affiliate links, which pays us a small compensation if you do decide to make a purchase based on our recommendation. Our judgement is in no way biased, and our recommendations are always based on the merits of the items.

For more details, please read our disclosure.
Affiliate Disclamer

This review may contain affiliate links, which pays us a small compensation if you do decide to make a purchase based on our recommendation. Our judgement is in no way biased, and our recommendations are always based on the merits of the items.

For more details, please read our disclosure.
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