Laptop Overheating, What Should We Do?
Laptops have
become more powerful and compact than ever before. A steep increase in CPU
performance is facilitated by chips that are ever more densely packed with transistors.
In parallel, slimmer cases pack an increasing number of processors and stronger
graphics cards support bigger screens with higher resolutions. These
developments come at a cost: excess heat. The greatest threat for your laptop,
except for your coffee, is overheating. It can cause hardware failure and
permanent damage. Let me show you how to prevent or fix an overheating laptop
and thus improve the performance and extend the lifespan of your computer.
A sure sign that
your computer is overheating is when your fan is always running at maximum
speed. You may also experience reduced performance because an overheating CPU
cuts back its clock speed to escape heat pressure. Moreover, the fail-safe
software may trigger a sudden shut down to prevent hardware damage. If you want
to measure the actual heat values inside your laptop, you can use a tool like
HWMonitor. This might also reveal which part of your laptop is getting too hot.
Typically, you'll find that the CPU or GPU are overheating the most.
Potential
reasons include dust blocking intake grills or exhaust ports, a clogged up fan,
or a degenerated thermal grease or can be called as thermal compound between
the heat sink and the CPU or GPU. You can fix all of these things yourself,
though some jobs will be tougher than others. If you need a quick fix and don't
have the handy skills to de-lid your CPU and apply fresh thermal paste, read
on.
HOW CAN YOU PREVENT OR FIX AN OVERHEATING
LAPTOP
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 airflow.
Consult your laptop's manual or manufacturer to find out how you can open the
laptop to access and clean these parts.
- · Shut down the computer
- · Remove the battery
- · Unplug the power strip
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, stop the fan from spinning by holding
it down. 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.
2. KEEP THE LAPTOP ON A HARD AN FLAT
SURFACE
Most laptops
suck in cooling air through their bottoms. Uneven surfaces, like a blanket,
pillow, or your lap, obstruct your laptop's airflow. Subsequently, cooling is
impaired, heat builds up, your laptop surfaces get hot, the temperature of
sucked in cooling air increases, and eventually the laptop is overheating. 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. We've previously recommended laptop trays.
3. BUY COOLING FAN
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. 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 accelerates
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. If you're handy,
you can build your own laptop cooler or cooling pad. We even found a solution
that will cost you under five bucks!
WHAT ARE POTENTIAL SOTWARE FIX
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 favour
of preserving the hardware.
You can either
reduce the brightness of your screen or reduce the CPU clock speed. In Windows,
under clocking or undervaulting is done in the BIOS, but can also be controlled
through software tools. Consult our undervaulting guide for more information
about this procedure. If you own a MacBook, try one of these fixes.
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