Is It Normal for a Laptop to Get Hot?
All laptops produce heat while they are running — this is normal. The processor (CPU) and the graphics card (GPU) convert energy into heat while working. The cooling system (fan + heat pipe + thermal paste) expels this heat and keeps the components at a safe temperature. The problem begins at the point where this system becomes inadequate or fails.
Normal operating temperatures: on the CPU 40-75°C is normal, above 85°C is hot, 95°C+ is dangerous. Similar ranges apply to the GPU.
Why Does a Laptop Overheat? — 6 Main Causes
1. Drying Out of the Thermal Paste
The thermal paste between the processor and the heatsink dries out over time, cracks and loses its heat-conducting property. This is the most common cause of overheating. It generally appears after 2-3 years. The solution: replacement of the thermal paste through professional thermal maintenance.
2. Blockage of the Fan and the Air Duct
Dust, hair and pet fur build up over time on the fan blades and in the air outlet channels. Airflow decreases and the heat stays inside. Symptom: the fan runs constantly at high speed but the device still stays hot.
3. Fan Failure
If the fan motor is worn or its bearing has failed, it runs at low speed or does not run at all. Symptom: the fan sound is different from normal (crackling, buzzing) or there is no sound at all but the device is very hot.
4. Incorrect Usage Habits
- Using the laptop on a bed or on a pillow: The ventilation openings underneath become blocked.
- Blocking the ventilation openings: The vents being blocked by a wall, a bag or the lap.
- Use in a hot environment: If the ambient temperature is above 35°C, cooling may be insufficient.
5. Background Processes
Programs running without your noticing (updates, virus scans, crypto-mining malware) can keep the processor at 100% continuously. Check this in Task Manager (Ctrl+Shift+Esc).
6. Hardware fault
Hardware faults such as evaporation of the fluid inside the heatpipe or bending of the cooler block can also cause overheating.
The Harms of Laptop Overheating
- Performance drop (Thermal Throttling): When the processor overheats it reduces its speed to protect itself. The computer slows down.
- Sudden shutdowns: On reaching the critical temperature the device shuts itself down. This can cause data loss.
- Mainboard damage: Prolonged excessive heat weakens the solder joints and can damage the GPU chip.
- Shortened battery life: Heat wears out the battery cells quickly.
How Can You Prevent Laptop Overheating?
Have Thermal Maintenance Carried Out
Have the thermal paste replaced and the fan cleaned once a year (every 6 months with heavy use).
Use It on a Flat, Hard Surface
Always use the laptop on a flat, hard surface such as a desk. Avoid using it on a bed or on your lap.
Use a Laptop Cooling Pad
Using a laptop stand or cooler with an external fan can reduce the temperature by 5-10°C.
Check the Background Applications
Check the CPU usage in Task Manager. Close unnecessary applications.
When Should You Visit a Service Centre?
You should have professional thermal maintenance carried out in the following cases:
- If the fan runs constantly at high speed
- If the area above the keyboard and the bottom case are too hot to touch
- If performance has dropped noticeably in gaming or video editing
- If the device shuts down suddenly
- If no thermal maintenance has been carried out for more than 2 years
At Altunakar Bilgisayar we provide professional thermal maintenance in Çankaya for laptops and MacBooks of all brands. We reduce your processor temperature by 15-25°C on average.