CPU utilization is one of the most common and difficult problems. 100% of the processor's work is taken up by obscure services and processes. This makes using a computer extremely difficult. Why it happens? Let's try to figure it out ...
Owners of personal computers, after some time after continuous use of the device, observe deterioration in performance, delay in response, and other problems. The most common reasons that can lead to such problems include the full load of the processor by unrecognized running processes. The easiest way in this case is to restart your computer. In some cases, this action can be effective. You can also recommend reinstalling the system, but this is already an extreme method, which belongs to the standard recommendations.
Common Causes of Increased CPU Usage
There are a lot of users who are really concerned about this issue. They all look for a way to solve this problem without the use of drastic measures. First of all, you need to understand the reason that could lead to the occurrence of this problem. You can turn to specialized forums for help. There are often discussed issues related to this behavior of the computer. There are several most common cases:
- violations in the functioning of the system;
- processor overheating;
- insufficient cooling.
How to identify the problem?
To determine the cause of the 100% CPU utilization, some diagnostic procedures must be performed. Once the cause is identified, a series of steps will need to be taken to eliminate it. Next, it will be described in detail what needs to be done in each specific case.
How do you determine which program is loading the processor?
First of all, if the computer suddenly began to react badly to commands and slow down, you need to open the task manager. For execution this action you can use the keyboard shortcuts Ctrl + Alt + Del or Ctrl + Shift + Esc. You can also call the context menu in the taskbar and find the corresponding item. In the window that opens, you need to select a detailed view. Tabs will appear, among which you must select "Processes". In this tab, you need to see when the processor is loaded at 100%.
The tab will display full list all processes running on the system in this moment time. They are all sorted by default into alphabetical order... To identify the process that might be causing the problem, you need to select the column with CPU usage. Sometimes it happens that a fairly massive program that requires significant resources is not correctly unloaded after closing. As a result, even after it is closed, many processes may remain in operation, and the load on the processor, accordingly, will remain. To solve the problem, just click on the "End task" button.
In this case, a system reboot may also have an effect, which was recommended at the beginning of the article. During the reboot, all tasks are removed. It also frees up additional resources that you might not notice on your own. The list of processes may contain unknowns that did not exist before. Such processes can also affect the system load. This behavior is typical for viruses. For this reason, it is good to know the names and characteristics of all the processes that run in the system. This way you can periodically check the list of running processes for suspicious activity.
System malfunctions
The previously described method does not accurately determine the reason for which the processor is 100% loaded. What to do in this case? In the task manager, you can often see a situation when the entire load falls on the "System inactivity" item. In this case, you will not be able to remove the task. We recommend that you run a utility that is distributed free of charge by Microsoft. The Process Explorer utility provides the extended information shown in the Task Manager. In this case, 100% processor load may occur due to system interrupts. They are referred to as Interrupts in the program. It is difficult to say what is the reason for this behavior, if you do not move on to decisive action.
What can load the processor?
Incorrectly described drivers often lead to this problem. To identify this problem, you must boot the system in safe mode. If after that the processor does not experience the same load, then most likely the problem lies precisely in the drivers. In this case, you need to look for new versions that are provided directly by the manufacturer of the laptop or computer. Also, viruses in the system can lead to similar problems.
In this case, you need to scan your computer using an anti-virus software... Also, 100% CPU utilization can occur as a result of problems with connected devices. How to be in this case? One simple advice can be given: just disconnect everything from the computer, leave only minimal set consisting of a monitor, mouse and keyboard. Take a look at Device Manager and check it for problems. If these recommendations do not help to solve the problem, then you will have to reinstall operating system... It is good if there are rollback points to restore to the point when the system was functioning normally.
Overheating and dust accumulation
Sometimes you can determine the reason why the processor is 100% loaded by the loud operation of the cooler and the increased temperature of the processor. These signs, as a rule, indicate that it is time to clean the laptop or computer of accumulated dust.
The computer slows down terribly it's been a long boot (reboot) Windows. The central processor is 100 percent loaded. The cooler (fan) hums and does not have time to cool the CPU. The sound in the speakers can be severely distorted, wheezing, pulling, grunting. :)
However, if you open Task Manager and look at the Performance tab, you will most likely see 100% CPU utilization. Sometimes the dispatcher does not open, which means it is blocked by a virus and you need to unblock the dispatcher.
What to do? In short, install the security task manager, identify the slowing process, remove malware that creates the maximum 100% CPU load.
100 CPU load
Strong braking is also manifested after repeated installations and removal of various programs, in the process of a long, or not very much use of the PC. And as a rule, this is treated in most cases, without torturing yourself, the computer with dangerous experiments on the registry, reinstalling Windows systems... This is of course an extreme measure and yet ... Yes, it happens, but not always with 100% CPU.
This also happens when malware enters the system, which happens very, very often. The computer crashes abruptly and this happens mainly at the first possible boot (reboot), after the virus is activated. If in the first case it is stupid, but the processor is not so loaded and it is still possible to work on a PC, then when such a pest hits and activates, it is almost impossible to perform any actions on the computer.
100% cpu is a virus
There is a very good utility for identifying such guests that create 100% processor load. I say not bad because they themselves got into such a situation and she helped out :)
Download!
Security Task Manager
Security Task Manager - Security Task Manager, displays the level of possible danger of a particular process. That is, it finds and shows everything that not only interferes with loading the OS, but also Windows (y) (in its opinion) work correctly. And you will decide for yourself what you need and what not. If the program is at risk in the first position, and you have not installed it and do not know what it is, uninstall immediately.
Install a manager and remove malware interfering with normal CPU operation.
You have a need to load the computer processor by 100%! For example, you need to test it under extreme conditions, or check how efficient the cooling system is and how it handles overloads. There are two ways. The first is to download and install special program like CPU Stress Test (CST). And the second is to load the processor yourself, using only the Windows operating system. I’ll tell you about this scenario now!
In order to accomplish our plan, we only need a standard Windows notebook. We open it and write:
Let me explain a little - you and I have written a program code that will start a simple loop from a While loop for a standard Visual Basic handler. Now you need to save the file:
Yes, not just, but with a different extension. To do this, write its name “loop.vbs” into the “File name” line.
Please note that the file name must be specified in double quotes in the line. Otherwise, it will have a .txt extension, but we need .vbs. As a result, you should get the following file:
To load the processor by 100%, you will need to start it. But first - open the Task Manager on the "Performance" tab:
The graph of the CPU load is displayed here - CPU. Since now the majority modern processors multi-core, then to load it to the maximum, i.e. 100 percent, you need to see all the cores. To do this, click on the chart with the right mouse button and select the menu item "Change chart" >> "Logical processors". I got it like this:
You may have more or less graphs depending on the CPU model. Well, then, in order to maximize the load on the processor, you need to load each core. To do this, run our clever script several times in turn and look at the result in the graph.
After the required result is achieved, it will be necessary now on the contrary - to unload the system.
To do this, in the same place, in the Task Manager on the "Processes" tab, find each task " Microsoft Windows Based Script Host ”and uncheck it.
Working on a personal computer requires a lot of effort from the user. But this is only if the main goal is to create a productive device. If the PC slows down, then a variety of reasons can contribute to this.
One of the most common options is overloading the processor. If the user begins to analyze the current situation, he may note that the fault lies with completely incomprehensible applications and running processes.
Strange loading of the central process is a problem that many users face. This also applies to the most modern processors. Therefore, it is necessary to look for a reason other than outdated equipment.
In some situations, you can reinstall the operating system. Updating and installing the required drivers is also a popular method. This real problem must be tackled using effective techniques.
Finding out the reasons
The relevance of this issue is very great. Users need to first find out which program is guilty of such a negative situation. This problem is quite common, so many users are interested in it.
To assess the degree of CPU congestion, you need to open the Task Manager. After that, go to the tab with all applications that are running on the personal computer. Next, all objects are sorted according to certain parameters. You can do this by name or by load.
The problem can occur even when the user has closed the application, but it is still in the active list. As a result, they load the system. And the user may not even guess about it, because he is sure that he closed the program, the game.
If failures begin, then you can reboot personal computer... In some cases, this helps because it will close the downloaded programs. You can also use the task manager. With its help, you can close all the necessary objects even faster.
At the time of processing the result of all displayed processes in the download, the user should conduct an analysis. Some applications can be dangerous. If they are not eliminated in time, then users will observe a gradual or sharp decrease in the performance of the device.
Professional help
A situation may arise when all programs are closed, but the load on the CPU is quite high. Such situations are also not uncommon. In this matter, you cannot do without the help of specialists. It is not at all necessary to carry the device to the master. You can use the Process Explorer utility.
The application will help you see all hidden downloads. As soon as the list appears on the screen, you can sort unnecessary services... You should also identify if there are any suspicious objects in the device. To do this, it is necessary to use this particular software product, since the Task Manager is far from always able to display all the elements.
Active struggle
Most common reason the problem is the lack of required drivers. Users need to boot the device using safe mode... Immediately after that, you can assess whether there is a load on the processor or there is no such problem.
In most cases, the reason lies precisely in the drivers. The surest way is to reinstall the OS. It is better to entrust such actions to a specialist. Only after installing the system is it necessary to carefully load the drivers. These components must be installed one at a time.
Users need to act very carefully. It is better to download directly from the official website of the manufacturer of your used device. In this case, the risk of problems is reduced to zero.
In second place are viruses. It is these pests that can negatively affect the performance of the processor. Some of these objects can extract files. Also, pests simply steal personal data and other important components. The appearance of banners is also influenced by malicious software.
Troubleshooting the problem is a very simple process. You just need to install a high-quality anti-virus service. First of all, it will start the process of scanning the system. An effective utility is able to identify all pests of different types and species. After that, it will be possible to eliminate all threats and begin to eliminate the problems that have arisen due to viruses.
The performance of the device may also decrease if the mode is activated. HDD operation... It is important to ensure that the hard drive works exclusively in DMA mode. Any other option will lead to all sorts of problems and failures.
You can also check the impact of all connected objects. To do this, simply turn off the mouse, USB flash drive, if it is a laptop. If the work is carried out with stationary computer, then the user must also turn off the monitor and keyboard.
You should pay attention to the Device Manager. If some devices display yellow or red icons, then this may mean incorrect operation or lack of drivers. So users need to be sure to study all the displayed information.
Based on this, conclusions can be drawn about the state of each element. So you can immediately download missing drivers or update outdated versions. If necessary, users can entrust some problems to real masters who will certainly help to solve all problems professionally.
Another common reason is the presence of dust, dirt. Some users do not monitor the cleanliness of the device. Therefore, the result of this neglect is overheating of the device. The cooler starts working much faster in order to only cool down the personal computer.
Also the replacement of the differential in the operating mode. The device can work stronger or weaker. Also, spontaneous reboot and shutdown of the PC is no exception. Users can fix all these failures on their own.
It is important to constantly monitor the temperature readings of the device. For this one should special utility... The application will be able to assess the optimal performance. When it is raised to a critical level, a notification will be shown. So the user needs to instantly identify the cause and try to eliminate it as soon as possible.
Dust cleaning should be done at least twice a year. Each user can do it on their own. Also, during the cleaning process, the thermal grease should be replaced. This is a fairly straightforward process. You should first read or watch a video on this topic.
Each of the considered troubleshooting options is really effective. Users just need to find out the reason in order to choose the right technique. If it is difficult to decide to implement any process, then you can simply reinstall the operating system. This is a win-win.
The processor is a key element in the PC, through which data is processed. Any program or application loads the processor to one degree or another. The less the processor is loaded, the faster and more stable the system works (files, folders, applications open quickly). Therefore, it is very important that the processor is not 100% loaded and has free resources to process the necessary tasks.
The main reasons for maximum load
There can be several reasons for the maximum CPU utilization for 100% in Windows XP, 7, 8, 10, and each has its own solutions. Most common reason Is the consumption of all processor resources by a certain program or service. It can also be a malfunction of the service due to which it begins to behave unstably.
Many do not attach of great importance cleaning the PC from dust and replacing the thermal paste, which leads to overheating, thereby placing a large load on the CPU.
To make sure exactly what is the reason for the high load on the processor, you need to carry out a number of diagnostic procedures to identify it.
Determine the program loading the processor
To reduce the load on the CPU, you can use Task manager... You can get into it different ways
: press simultaneously Ctrl + Shift + Esc or Ctrl + Alt + Delete or go through the start menu to the context menu of the taskbar and find the dispatcher there. 
When the task manager is open, you need to go to the " Processes", Which will display the processes and services of the system. For convenience, they can be sorted by clicking at the top on the column “ Cpu" or " CPU"(In different Windows versions differently).
And after these manipulations, you can see which program or service is loading the CPU. It often happens that "heavy" programs (which consume a large number of PC resources) leave after closing residual services or incorrectly terminated applications, thereby affecting the health of the computer. Very often browsers “sin” like that. In addition, often high-quality video, which the PC simply cannot handle, can load and slow down the work.
You can solve this by clicking LMB (left mouse button) on the application that consumes the CPU and click " Remove task", Thereby removing the program from PC resources. You have to be careful here, because there is a possibility terminate some system service and then you will have to manually restart the computer.
CPU load for no reason
It happens that in the standard utility "Task Manager" you cannot see the processes that load the CPU, but the processor is still 100 percent loaded for no reason. In such cases, you can refer to third-party programs.
Download and run the AVZ program. Go to "Service / Process Manager" there will be all processes are shown running on the computer. The main thing advantage AVZ is that the program marks system processes in green. Those. you should take a closer look to see if there is a svchosts.exe process, which is colored black. 
If no third-party processes are found, then you can try disable automatic update Windows.
To disable updates, you need to go to the " Services", The easiest way is to press Win + R, write services.msc in the window that appears and press" OK ". In the window that opens, find the line “ Update centreWindows", Double-click on it and select" Startup type "- Disabled, and below click the" Stop "button. Then we save the settings and restart the PC.
CPU load due to overheating
The key parameter for the stable operation of a computer is its temperature. If the CPU starts to overheat, then the user notices the unstable operation of the system, freezes, " blue screen"And sudden shutdowns of the PC. 
To find out the CPU temperature, use third party programs, for example Aida 64.
The computer may overheat due to several reasons:
- Pollution... A computer or laptop requires constant cleaning (every 6-12 months), because dust accumulates in it during use, which impairs the operation of coolers and heat transfer of the radiator, thereby contributing to overheating.
Solution: take the computer to service center to clean it, or open the side cover yourself and carefully but thoroughly remove all accumulated dust. (If you are the owner of a laptop, you will have to carry it to the service center)
- Cooler malfunctions... The main task of the cooler is to continuously supply cold air to the heatsink to cool the CPU. In the event of a malfunction, the computer starts to overheat. You can make sure of the malfunction yourself, you should open the side cover of the computer and see if the cooler rotates normally (are there any creaks, crackling)
Solution: If the cooler is really faulty, you should immediately contact the service center for its subsequent replacement.
- High room temperature... This problem is very actual in the summer, it is hot at home and outdoors, therefore, the cooler will draw in hot air. Because of this, its cooling efficiency drops significantly.
Solution: You can open the side cover of the computer by yourself and direct a regular fan there. For laptops, special cooling stands are produced.
Outdated PC
New technologies are moving forward very quickly, the computer sphere is one of them. Updates for various programs are released every day and every year standard programs start to consume everything large quantity resources.
If at startup standard application(browser, paint, photo viewer) CPU utilization becomes 50% or 100% and does not decrease, then most likely it's time to update the PC configuration.
Startup applications
Many people have been using a PC for years without reinstall Windows and cleaning it from programs. With the passage of time and the installation of certain applications, the autostart of the system is clogged and when the OS boots, programs that a person has not used for a long time are loaded. Because of this, the CPU may be constantly loaded, to avoid this you should clear "Startup"
There is a popular utility CCleaner, with its help you can remove programs that you have not used for a long time, leaving only the most relevant and antivirus. 
