HomeSolutionsWhy is my CPU Overheating? How do I keep my CPU Cool?

Why is my CPU Overheating? How do I keep my CPU Cool?

Why it's important to prevent CPU overheating? Can it cause real damage to your PC? We have provided here complete information about PC overheating.

Over time more users are asking why is my CPU overheating? It’s because everyone desires their PC to remain cool but while running resource-intensive tasks CPU heats up.

No doubt CPU Overheating may lead to unexpected shutdowns, lost data, and serious hardware damage. At the same time computers are designed to disseminate normal heat.

To counter CPU overheating PC has a built-in ventilation system as well. So, every heat which a PC generates is not dangerous. In this article, we have explained the causes of CPU overheating and how to fix it?

Why Your PC Generate Heat

How to lower CPU overheating?

Electricity is required for the CPU to perform regular tasks. Using electricity CPU uses the arithmetic logic unit to execute the command. The Central Processing Unit (CPU) and the Graphics Processing Unit (GPU) consume most of the voltage.

That’s why they are prone to generate more overheat than any other component and may cause CPU overheating.

Overclocking is another factor of CPU overheating. Through this process, the PC generates more heat. If you ask what overclocking is? It’s to run the CPU or GPU at a higher clock speed than prescribed by its default settings.

No doubt the performance increases in this process but ultimately the CPU and GPU overheating also increases. To counter this problem of CPU overheating, some use the process of underclocking.

How Your PC Lowers Its Temperature?

lower CPU overheating

Computer components generate heat during normal use, that’s why several cooling systems are built in most PCs to mitigate CPU temperature. The airflow is one of the most common cooling systems.

All computer cases draw cool air from the outside and expel hot air that builds up in the case. In this way, the chances of CPU overheating are reduced.

Related: 11 Easy Ways To Prevent Computer Overheating & Keep Your PC Cool

But how the main airflow works in your PC, depends on the computer’s case and design. The ordinary computer case has a single PC fan with vents on both sides.

To counter CPU overheating on high-performance PCs, you’ll likely see more than one intake and exhaust fan designed with the purpose to deliver proper airflow all over the interior components.

CPU and GPU are the biggest heat generators and have additional cooling systems placed on them. Usually, a heat-sink is attached to a CPU that’s designed to pull heat off the processor and an attached CPU fan throws that heat away from the CPU and heat-sink.

What Are The Signs Of CPU Overheating?

Sign of Overheating computer

As already explained, the computer does generate normal heat. But if someone wants to know what an overheating computer looks like? Then I must say that there are different signs/symptoms of CPU overheating which tells you that “yes” your PC is dealing with CPU overheating.

Usual signs of CPU overheating include:

  • PC shuts down abruptly,
  • blue screen of death (BSOD) appears,
  • PC freezes,
  • unusual fan sound,
  • PC becomes sluggish.

A simple test to check whether it’s PC overheating or not is by feeling the high CPU temperature that it emits from visible components. If they are overly hot, it means there is a problem of CPU overheating which needs to be fixed.

Other signs of CPU overheating vary from computer to computer depending upon different models. In almost every computer there is a fail-safe that acts as a fuse in the circuit.

It shutdowns the PC when the CPU temperature goes up, and then the PC remains off until it cools itself down.

General Causes of CPU Overheating

The causes of CPU overheating can be divided into two categories to understand it better.

Internal Causes of Overheating

PC fans help lower CPU overheating

The main reason why a computer overheats is when there is a damaged fan or inadequate cooling system. Old CPU placed inside PC can also prove to be another cause.

Buy a New CPU Fan If It’s Broken or Faulty

In recent years, the quest for making a more powerful PC has also caused a problem of increased GPU overheating & CPU overheating.

Other common causes of CPU overheating are watching movies, playing games, doing graphical work, Burning CDs, etc. To mitigate the problem of computer overheating you should improve the air cooling system or liquid cooling system.

When you play high graphics games with low PC spec it also causes GPU overheating.

Overclocking of CPU & GPU is another cause, this technique is used to enhance the performance of CPU. Overclocking in simple terms means, running the CPU/GPU beyond its actual limits prescribed by its manufacturer.

This process does enhance efficiency but at the same time, it causes CPU overheating.

External Causes of Overheating

poor location of the Computer

Apart from the internal component which adds up to the CPU heat problem, there are other external causes as well.

The poor location of the Computer and the ventilation of the room also raise the concern of CPU overheating. Because in summer or closed room access to fresh air is a problem.

Inadequate ventilation in computer cases is another factor that causes computer overheating.

Sometimes dust accumulates within cases that prevent the circulation of air in computer cases. Ventilation in the laptop is a serious problem because there is a narrow space between components.

That’s why the chances of laptop overheating are more as compared to desktop PC. But you can fix this overheating problem if you regularly clean your computer.

Insufficiency of a cooling system in computer cases is another problem. Usually, there are three PC fans placed inside. But if heat accumulates in a computer case then there’s a needs to improve the existing PC air cooling system.

You can also increase the fan speed using a free temperature monitoring program like Speefan for windows. If you are a Mac user then macs fan control is the best software to deal with air cooling issues.

Related: HWMonitor Review For Windows 10

How Hot Is Too Hot For PC?

Electronics by their nature exudes heat, and it is the same case with a computer. Each task that is given to a PC puts some stress on CPU, GPU, Hard Disc Drive (HDD), and Optical Disc Drive (ODD), but one should not get paranoid on normal PC heat.

But if fans are working for a considerable time and make noises then this is a sign of CPU overheating. On the other hand, where the fan does not work or is broken is another story to be told at a later time.

In windows, there is a built-in program called resource manager it shows which application is consuming more memory and causing more CPU heat. Try this application to trace the source of the problem.

Normal CPU temperature for better PC performance

There is no hard and fast rule which tells us about what is the best CPU temp range? Or what is a safe CPU temperature because each PC, CPU, and GPU model varies?

But the computer technician still tries to tell us the average CPU temperature. Scientifically speaking, CPU temperature should range between 20°C/68°F to 26°C/79°F to avoid CPU overheating.

It is a good temperature for PC. But once it goes beyond 70°C, it can damage the computer. Another study shows that normal CPU temperature should be around 60 degrees Celsius, but the ideal CPU temperature is considered between 45-50 degrees Celsius.

For playing games, the normal GPU temperature should be around 80-degrees Celsius. At that PC Temp, chances of GPU overheating are low. For playing games normal CPU temperature is 70 C°, it must not exceed that point.

Latest Intel and AMD laptop, and desktop CPUs can work at a maximum temperature of 100° Celsius. But continuously running PC at 100 C° will cause CPU overheating.

How to check CPU temperature?

Why my CPU is overheating even under 0 load

If you suspect your system is overheating, how can you determine the CPU temperature? The answer is simple. If you suspect that your CPU is overheating, but you don’t want to install any CPU temperature monitoring software to check CPU temp if it’s computer overheating then there is another way.

Use system BIOS and for that restart your computer. When the Windows icon shows up press the “delete” key to enter in BIOS. For those who want to check CPU temperature Windows 10 or Windows 8, they can press and hold the “shift key” when clicking restart. That way a new advanced startup mode will show up.

Related: How to Check CPU Temperature on Windows 10 PC

Once you enter the system BIOS check BIOS menu, there you should be able to find a menu that deals with Computer hardware monitors and CPU temp. In it, you can see a field that shows the maximum CPU temperature your system can have. This method only tells you what is the CPU temperature of your PC but it does not control CPU overheating. For that, you have to use a third-party CPU temperature monitor.

These system hardware monitoring tools are free and very easy to control. These CPU temperature gadgets can tell you what is the temperature of the CPU and GPU while doing some burdensome tasks. Some of these CPU heat monitors even allow you to control CPU fan speed this way you can lower the chances of CPU overheating.

The best CPU temperature monitor software for Windows 10/7 are Core Temp, HWMonitor, Speedfan, Real Temp, Open hardware monitor, Rainmeter, CPU thermometer, Speccy, AIDA64 Extreme, HWiNFO

fix CPU overheating problem in old or new PC

What to do with overheated CPU?

The most straightforward solution to keep your overheated CPU healthy is by placing your computer in a cold environment. If the problem is still there, then don’t worry there are other methods as well to control PC temperature.

Remove the computer’s cover

Remove PC Case to avoid overheating

To fix the CPU overheating problem first remove the side panel of the computer but before doing so switch off the PC. Usually, this simple method solves the CPU overheating problem. Because more fresh air will quickly pass through PC components a result decreases PC heat.

Regularly clean your PC

Regularly Clean Your PC

To avoid CPU overheating, build a habit of regularly cleaning your PC. Because dust particles and debris accumulate in the PC case which blocks the passage of air from the surrounding.

In almost all overheating the computer, there is piled-up dust in it which prevents effective airflow. To prevent overheating regularly clean your computer, for that you should buy a can of compressed air, mechanical oil dropper.

Carefully remove dust from heat-sinks and power supply fans. This method will surely help in decreasing the problem of CPU overheating in the computer.

Make sure that fans are running properly

Usually, there are three fans installed in every computer even the failure of one fan can increase the chances of CPU overheating. These three fans are located on the CPU, power supply unit, and back of the computer casing.

If you are facing computer overheating then there might be a problem with one of these fans. To solve this problem open the computer case and check if the fan is broken or is unplugged. Immediately fix the PC fan otherwise excess heat will damage the internal components of your PC.

Install a Liquid cooling system or buy a laptop cooling pad

why my new CPU is keep overheating

The liquid cooling system is an alternate method to lower the CPU overheating threat. The water cooling system performs more as compared to the common air cooling system.

Usually, those who overclock the CPU to gain more performance uses a liquid cooling system. If you have installed this type of cooling system then you should properly check it. If it is a leak then it will fry your internal hardware.

Create Enough Space for Ventilation in a Computer Case

Remove blockades from the front and back of the computer casing. It will increase the flow of fresh air and fix CPU overheating.


Unless the heat that the CPU generates is excess CPU overheating is not a problem. Any PC can benefit from the simple measures mentioned above to lower computer temperature. Usually, the major causes of CPU overheating are overclocking, old hardware, and a faulty cooling system. Apart from that graphics card overheating is another factor of PC overheating. To avoid PC overheating you should always maintain the ideal PC temperature within PC which is 45-50 degrees Celsius.

If you want to check which component is causing computer overheating. There are many CPU temperature monitor software. To prevent CPU overheating there are different computer overheating solutions to cool down the computer. Like, sufficient airflow, removing computer cases, cleaning computers regularly. Always remember, before you put your computer under strain you should have the proper means to overcome the overheating problem.

As they say “prevention is better than cure.”