Put the laptop on a hard, flat surface, close your heaviest apps, and drop it into power-saving mode. That alone will cut temperatures within minutes.
A few more steps worth doing right now:
Pro Tip: Download HWiNFO64 (free, Windows) and watch your CPU package temperature in real time. If it sits above 90°C under light load, the problem is hardware, not software, and no power-plan tweak will fix it.
Keeping a laptop cool comes down to three things done consistently: correct placement, regular maintenance, and sensible software limits.
| Point | Details |
|---|---|
| Start with placement | Use a hard, flat surface and keep ambient temperature below 24°C (75°F). |
| Clean vents regularly | Blow out dust every 3–6 months; this resolves overheating in most older machines. |
| Use software limits | Cap maximum CPU to around 75% in power settings for immediate heat reduction. |
| Match pads to vent type | Active cooling pads help bottom-vent laptops under heavy load; passive stands suit everyday use. |
| Repaste after 3–4 years | Replacing dried thermal paste can cut temperatures by 15–20°C on older machines. |
Heat in a laptop comes from a handful of sources, and knowing which one is responsible tells you which fix to reach for first.
The processor and graphics chip generate the most heat under load. A CPU rendering video or a GPU running a game can push well over 80°C within seconds. The battery adds its own heat during charging, and an ageing battery that no longer holds charge efficiently runs hotter than a healthy one. Mechanical hard drives (HDDs) also generate more heat than solid-state drives (SSDs) because of their spinning platters, so a laptop still running an HDD tends to run warmer than an equivalent SSD-equipped machine.
Airflow is the other half of the equation. Most laptops draw cool air through vents on the base and exhaust hot air from the sides or rear. Place the machine on a duvet and those intake vents are sealed. The fans spin faster, the chassis heats up, and the processor starts throttling itself to avoid damage.
Degraded components make everything worse over time:
The warning signs are worth knowing: a fan running constantly at full speed, a chassis that is hot to the touch near the keyboard or base, unexpected slowdowns during tasks that used to run smoothly, and in serious cases, sudden shutdowns. Loud, constant fan noise is an early indicator that the system is already compensating and should be investigated before throttling or shutdowns follow.
Physical changes cost nothing or very little and often produce the biggest immediate improvement.
Zero-cost fixes first. Place the laptop on a hard, flat surface — a desk, table, or even a hardback book. Microsoft Surface guidance specifically recommends hard, flat surfaces and warns against soft surfaces that block vents. Raise the rear edge slightly using a small wedge or even a pen; that angle opens the gap between the base and the surface, improving intake airflow. Keep at least a few centimetres of clearance from walls and objects near the exhaust vents.
Passive stands (no moving parts, no power required) lift the laptop a few centimetres and improve airflow underneath. They cost between £10 and £30 and work well for everyday users who do not need active cooling.
Active cooling pads add one or more fans beneath the laptop. They work best with bottom-vent designs where the fans can push cool air directly into the intakes. Side-vent laptops gain less because the pad’s airflow does not reach the intakes. For gamers or anyone running sustained heavy workloads, an active pad is worth considering. For light daily use, a passive stand usually does the job.
Lap mats (such as those from Targus) are primarily comfort accessories. They protect your legs from heat and prevent vent blockage when you genuinely need to work on a sofa, but they do not cool the laptop the way an active pad does.
Pro Tip: Before buying any cooling pad, check where your laptop’s intake vents are. Flip the machine over. If the vents are on the base, an active pad will help. If they are on the sides or rear, a passive stand that simply lifts the chassis is often more effective and quieter.
Software changes are free, reversible, and often underused. Start here before spending anything.
Power plan settings are the quickest lever. In Windows, go to Settings > System > Power and set the plan to Balanced. You lose a small amount of peak performance, but sustained temperatures drop noticeably. PCWorld’s testing confirms that limiting CPU power and switching power plans produces immediate heat reduction with minimal practical performance loss for most tasks.
Close background processes. Open Task Manager (Ctrl + Shift + Esc on Windows) and sort by CPU usage. Browser tabs are the hidden culprit: each one keeps scripts running in the background.
Reduce screen brightness. The display backlight generates heat.
Monitoring tools to use:
Watch CPU core temperatures and package power. Under light load, most laptops should sit below 60°C. Sustained temperatures above 85–90°C under normal use indicate a hardware or maintenance issue that software settings alone will not resolve.
Regular cleaning resolves overheating in a large proportion of older laptops. Dust is the quiet culprit.
Maintenance checklist:
When cleaning is not enough. If temperatures remain high after a thorough clean, the fan may be failing or the thermal paste has degraded. A fan that spins intermittently, makes grinding noises, or does not spin at all needs replacement. That is a job for a professional repair service unless you are confident opening the chassis.
Thermal paste degrades over time. PCWorld recommends replacing it every 3–4 years as a high-impact maintenance step. A correct repaste, applying a thin, even layer and ensuring good heatsink contact, can reduce CPU temperatures by 15–20°C on older machines according to Gadget Scout’s thermal testing. Too much paste or uneven application reduces thermal transfer rather than improving it.
Battery care also affects heat.
If your laptop overheats repeatedly after cleaning and a repaste, consult the laptop repair before replacement checklist to decide whether a component repair or full replacement makes more sense. Opening the chassis on a machine under warranty may void that warranty, so check terms before proceeding.
Cooling pads are not universally effective. The results depend almost entirely on vent placement and workload type.
WIRED’s testing found that cooling-pad performance varies widely between designs. Open-air pads with large slow fans produce modest temperature reductions for most laptops. Sealed, high-pressure designs that force cool air directly into the laptop’s intake vents can yield substantially larger drops, particularly under sustained load.
Who benefits most:
The trade-off is noise. High-RPM sealed pads move more air but add audible fan noise at desk height. For a quiet home office, a passive stand plus good placement often beats a noisy active pad that delivers only marginal gains.
Statistic callout: Active cooling pads are most useful for bottom-vent laptops under heavy sustained loads; average users typically benefit more from cleaning and correct placement than from any external accessory.
Pro Tip: When choosing a cooling pad, look for a sealed-pad design with intake-aligned fans rather than a large open platform. Check the product description for “sealed” or “directed airflow” and match the fan positions to your laptop’s base vent layout before buying.
Knowing the category matters more than the brand. Here is what to look for and where each type fits.
When choosing a cooling pad, consider: vent alignment with your laptop’s base, sealed versus open design, fan noise at head height, portability if you move between locations, and whether the product carries a UK warranty.
For hardware faults beyond a repaste, including fan replacement or thermal system repairs, a professional service is the safer route. The types of business laptop repairs guide covers what to expect from a repair shop and when component replacement is the right call.
Short descriptions so you can go straight to the source that matches your next step:
Move it to a hard, flat surface, close unused apps, and switch to Balanced power mode. If temperatures remain high after those steps, clean the vents with compressed air and check whether the thermal paste needs replacing.
They can, but results vary. Sealed, high-pressure designs that direct airflow into bottom intake vents produce the largest temperature drops. Open-platform pads with slow fans offer only modest gains for most laptops.
Some warmth is normal under load, but sustained temperatures above 85–90°C on the CPU indicate a problem. A chassis that is uncomfortable to touch or a fan running constantly at full speed are signs worth investigating.
Constant loud fan noise means the cooling system is working at its limit, usually because of dust buildup, a heavy workload, or degraded thermal paste. Clean the vents first; if the noise persists under light use, the fan itself may be failing.
