Why the processor is loaded at 100. Solving problems with unreasonable processor load. Software causes of overload

In Windows 7, the most important process in the OS is Svchost.exe. Very often, PC users with Windows 7 encounter a problem when this process heavily loads the processor. The load on processor cores can reach from 50 to 100 percent. Svchost.exe is host process responsible for starting group services from dynamic libraries DDL. That is, the system, using this host process, starts a group of services without creating unnecessary processes. This approach reduces the load on the processor and RAM. If the system slows down and Svchost.exe heavily loads the processor, this means that the OS is not working properly. This behavior of the system can be caused by malware, as well as problems in the OS itself. To deal with this problem, in this article we will look at all the ways to solve the problem with high CPU load caused by the Svchost.exe process.

First steps to solve the problem with the Svchost.exe process

If you have a situation where the host process Svchost.exe is heavily loading the processor, then you should not immediately think that it is a virus. In addition to the virus, the OS itself may be the culprit of this problem. Below we will look list of problems, and also methods to correct them:

Restoring normal processor operation using an antivirus

If the methods described above did not help, then most likely your Windows 7 infected with a virus. Typically, infection with a virus occurs from the outside. That is, via the Internet or via external storage data. If you have good antivirus, then most likely the virus will not pass. But there are times when antivirus programs do not see new versions of viruses and skip them. If your computer is infected, then the Svchost.exe host process will load the processor up to 100 percent, and in the user name you will see not the system names “LOCAL” and “NETWORK SERVICE”, but a completely different name.

To get rid of a virus in the system, you need run full check computer in Windows 7 to search for malware. Below we will look at an example of running a full computer scan using Comodo antivirus Internet Security. Also, before running any antivirus to scan the OS, update its antivirus database. Let's move on and launch the antivirus Comodo Internet Security.

In the main antivirus window, go to the bottom tab “ Scanning", which will open a menu from which you can select scanning options.

In our case, you need to select the item “ Full scan" This option will scan the entire hard drive, identify malicious programs and neutralize them. Below is the Comodo Internet Security scan window.

In others antivirus programs The principle of launching a full PC scan is as similar as possible to what was discussed. Therefore, if you have a problem with the Svchost.exe host process, then feel free to run a full PC scan.

For this example, we chose the Comodo Internet Security antivirus for a reason. This antivirus has a built-in module called KillSwitch(this module is currently included in the free set of utilities COMODO Cleaning Essentials, which you can download).

This module is a task manager that has advanced functionality. For example, KillSwitch can stop the process tree and revert the changes made after that.

Also a feature of KillSwitch is checking running processes for trust. That is, if the process is untrusted, KillSwitch will find it and indicate this in the third column " Grade" This feature of the KillSwitch module will help you quickly identify problems related to Svchost.exe and CPU usage.

It is also worth mentioning when a virus infects the antivirus itself or reliably disguises itself from it, as a result of which it is not seen installed antivirus. In this situation, the user will come to the aid boot disk. This disk is a portable Linux-based operating system that boots from it. After downloading from this disk, the user will be able to run a PC scan directly from the downloaded operating system.

Such a scan should find and neutralize viruses that cause Svchost.exe to load processor cores. Most known viruses The ones that load the CPU with Svchost.exe are:

• « Virus.Win32.Hidrag.d" - is a virus written in C++. Once in the system, he replaces Svchost.exe. After that, it looks for files with the extension “*exe” and infects them. The virus is harmless; it does not harm the system and does not steal information. But constant infection of files with the “*exe” extension greatly loads the processor.
• « Net-Worm.Win32.Welchia.a" - this virus is Internet worm that loads the processor through Internet attacks.
• « Trojan-Clicker.Win32.Delf.cn» - a primitive Trojan that registers a new process Svchost.exe in the system to open a specific page in the browser, thereby loading the system.
• « Trojan.Carberp» - dangerous trojan, which also masquerades as Svchost.exe. The main purpose of this virus is search and theft of information from large retail chains.

High CPU usage due to Windows Update

On computers running Windows 7, there is often a situation where the Svchost.exe process loads the processor and memory because of the update center. To check what exactly the update center is loading up the memory and processor, you need to go to “ Task Manager" and use Svchost.exe to navigate to the services that it currently manages. An example of such a transition is shown in the image below.

After such a transition, a window with services should open, where the service “ wuauserv».

It is this service responsible for downloading and installing updates by seven. Fixing this problem is quite simple.

In the Task Manager Services window, you can completely stop “wuauserv” or disable checking for updates in the Control Panel.

But disabling the “wuauserv” service is an ugly way out of this situation.

When this service is disabled, the security of the OS as a whole is compromised, since installation of updates through the update center will be disabled.

You can solve this problem by installing updates manually. In order not to download dozens of updates from the website www.microsoft.com and then take a long time to install them, it is best to use a set of updates UpdatePack7R2. The developer of this set is " simplex”, who is also known by this nickname and is a moderator on the www.oszone.net forum. You can download this set from the website http://update7.simplix.info. Currently posted on the website latest version numbered 12/17/15. After downloading the set, you can begin installing updates. To do this, let's run the installer.

In the window that appears, click the Install button. After this, the update installation process will begin.

This process can take quite a long time and depends on the amount already installed updates. Update this way offline the Windows way 7 is possible constantly, since the author of the project is constantly releasing new sets. You can also restart the update center after the update installation is complete. The memory and CPU usage issue should go away this time as these updates contain a fix.

Other ways to solve the problem with CPU load due to Svchost.exe

In this section, we will describe methods that in some cases help solve the problem with Svchost.exe, and also increase the overall performance and stability of the system. Below is list with detailed description each of the ways:

• Very often it helps to solve the problem of the Svchost.exe process, even when it is infected with a virus, the usual OS rollback using a restore point. But this method can only be used if system protection is enabled.
• With prolonged use of various installed programs Windows 7 operating system accumulates a lot of garbage on the hard drive. Garbage refers to temporary files created when using various utilities. For example, browser history files. In this case, they will come to the rescue special utilities for cleaning the OS. The most popular among them is the program CCleaner.
• We also recommend defragmentation, which can improve overall system performance. Defragmentation, although it will not solve the problem with the Svchost.exe process, will significantly speed it up, thereby reducing the load on the processor. One of the best defragmenters is the utility Defraggler, which, in addition to its main function, can also defragment system files.
• Cleaning the registry also helps solve our problem. To clean the registry, as in the method above, use the utility CCleaner which is fast will delete old registry keys, preventing Svchost.exe from working correctly.
• Also, for all running processes, including Svchost.exe, an important factor is the working RAM. At faulty memory The system and running processes may behave unstable. The way out of this situation would be replacing RAM with working memory. You can check your memory for serviceability using the built-in diagnostic tool in Windows 7.

Conclusion

In this article, we covered quite extensively the problem associated with high CPU usage due to the Svchost.exe process. Based on this, our readers will certainly be able to solve this problem and ensure normal operation of the computer.

Video on the topic

High CPU usage can indicate various problems. If a program is using up all of the processor's memory, there is a high chance that it is not working correctly. CPU usage may also indicate the presence of a virus or adware, which should be dealt with quickly. It may also mean that your computer is not able to do what you want it to do, which means it needs an upgrade.

Steps

Windows

Press the key combination. Ctrl + ⇧ Shift + Esc to open Task Manager. This is a utility that monitors all processes and programs that are currently running on the computer.

Click on the "CPU" column. This way you will sort processes by CPU load.

Find the processes that are using the most CPU. Typically, you should only see one program using nearly maximum CPU usage (99-100%), but it is possible that several different programs are causing the problem, each taking up to 50%.

• Many games and graphic editors occupy 100% of the processor memory. This is normal, since nothing else should be running on the computer while these programs are running.

1. Pay attention to the "Image Name" column. This name will allow you to later find the process and determine how to prevent high load.

   • In Windows 8, instead of the system process name, you will see the full name of the program. This moment greatly simplifies the task of recognizing a program.

2. Select the problematic program and click on the button.End the process. You will be asked to confirm the completion of the process.

   • In Windows 8, this button is called End task.
   • Forcing a program to terminate will cause all unsaved work in the program to be lost. Besides, force termination process may cause your computer to stop working until the next reboot.
   • You should not forcefully terminate the System Idle process. If this process is hogging your CPU, know that it's not actually using it. When the System Idle process is using almost all of the CPU, it means that your computer now has a lot of free processing power.
   • If you are unable to force quit a program, click here to learn other more advanced methods.

3. Decide what to do with the problematic program. Search the Internet for the name closed program. This will help you understand what the process is used for and what you should do to prevent it from loading the processor to 100%. There are only a few ways to solve the problem of full processor load due to a specific program:

   Check Power Options (laptops only). If you are working on a laptop and are not connected to power, your laptop may automatically slow down to save battery power. Changing your power settings can increase your laptop's processing capabilities, but will also require you to charge the battery more frequently.

   • Open Control Panel and select Power Options. If you don't see this option, click Hardware and Sound and then select Power Options.
   • Click on the "Show additional schemes" option to expand the list.
   • Select "High Performance". Now you will have access to the full processing power of your laptop's processor.

4. If your CPU is constantly running at 100% and no program is to blame, you may need to consider upgrading your computer.

   • You can find instructions on the Internet on how to increase the available processor memory using a flash drive.
   • Click here for instructions on how to increase your RAM. Increasing the amount of RAM will help make your processor's workload easier.
   • Click here for instructions on upgrading your processor.

5. Delete files from your desktop. Mac spends preview all files on the desktop. If you have a lot of video files on it, they will take up your CPU, causing Finder to hit 100% of your CPU. Remove files from your desktop and move them to a folder, after which the work will slow down only when you open this folder.

6. Upgrade your computer if you have problems with most programs. If your CPU is constantly running at 100% and no program is to blame, you may need to consider upgrading your computer. With a Mac, your choices are more limited than with Windows computer, but increasing RAM will still help improve performance.

   • Click here for instructions on how to increase your RAM. Increasing your RAM will help make your processor's workload easier.

Most often in our practice, the main reason for CPU load reaching 100% is overheating. Many users do not know that dust getting into the radiators of cooling systems can significantly reduce the performance of devices. When the processor overheats, it goes into throttling mode, starts skipping clock cycles, and performance decreases.

To check the processor for overheating, look at the temperature of the processor without load and under load. We compare these temperatures with the maximum permissible declared by the processor manufacturer. The maximum permissible temperature can be found on the processor manufacturer's website in the specifications.

Viral activity

When there are a lot of viruses on a computer, this also reduces system performance. Viruses, like regular programs, consume processor resources, this can lead to 100% CPU load. I talk a lot about virus removal in my YouTube channel, and be sure to read and follow. After complete cleaning computer from viruses there will be no problem with CPU load!

Driver problems

Another reason for CPU usage is system interrupts, in other words a problem with the drivers. I recommend doing the following: boot your computer into safe mode and see if there is an increased load on the processor. If there is no load, there is a very high probability that the reason is in the drivers, because the drivers do not load in safe mode! The simplest solution to this problem is to remove all the drivers and then install one driver at a time and see if the CPU load appears, as soon as the download starts - you have found the culprit.

Most often the fault here network cards + universal drivers from Microsoft, which are installed immediately when Windows installation. I recommend downloading and updating all drivers from the official website of your equipment manufacturer. I showed how to do this.

Elementarily weak percentage that doesn’t work ツ

For some reason, many people think that their ancient processor should still run fine and without any brakes. But that's not the case now digital technologies develop very quickly and sometimes budget processors just two or three years ago don’t hold up today. Even if you have a top-end processor from 10 years ago, this does not mean that it can cope with modern tasks. Perhaps this is where the heavy load on your processor lies, think about it. If you are not sure, ask other owners of the same processor how it works for them in the same tasks. Often they bring computers to us and say: my video on the Internet has started to slow down. We look at why this is happening and it turns out that the new video codec old processor doesn't pull. We explain this to the client, but he doesn’t believe it and motivates it by the fact that 2 weeks ago everything was working for him, but now it’s slowing down. The problem was that the site on which he watched the video had switched to a new video encoding method, which heavily loaded the old processors, but gave a higher quality video picture.

Autoload full of junk

Another problem that arises experienced users, heavily clogged unnecessary applications startup. After all these applications are loaded (the computer will take a very long time to load), they load the processor with their activity. Startup needs to be cleaned, you can even remove everything from there except the antivirus and programs that you actually use. You can do this through the program in the startup section or write MSCONFIG in the search and go to the startup section and disable what is unnecessary.

Antivirus activity

The hard drive is loading the processor

The hard drive can load the processor up to 100% under some conditions. Most often this is due to the fact that the disk begins to fail. I wrote about this in detail in the article -. Follow all the recommendations and your disk and processor will probably stop loading up to 100%.

Problems with peripheral equipment

Disconnect everything from your laptop or PC, leave the bare minimum (mouse, keyboard, monitor). Then connect everything necessary devices take turns and check the reaction of the processor. Perhaps this way you will find the culprit of this problem. I also recommend paying attention to the device manager to see if there is any installed devices with yellow or red icons it means either there are no drivers or they are not working correctly. As I wrote above, this can create a load on the processor.

A huge number of running processes

Everything can be simple and trivial, perhaps you just run too many applications at the same time and the processor simply can’t handle it all. The processor may be powerful, but everything has a limit. Open the task manager (CTRL+ALT+DEL) sort processes by load per percent and stop/disable the heaviest processes. If you don’t know which process is responsible for what, you can look up information on the Internet. I will show you more in the video on this page.

Some processes cannot be tracked through a regular task manager (these may be viral processes), then download and check all processes with it, you can also check the process there for digital signature, as well as viral activity!

Svchost.exe is loading the processor!

With the svchost.exe process, not everything is so simple, there are 2 options: either it is a viral activity or a system process is actually loading the processor. If the load is created by a viral process, then most often it can be seen through Process Explorer, it will be launched from the administrator or from your account. It is enough to simply stop the process and clean it from viruses. If svchost.exe is really a system process, then try disabling automatic Windows update in services and also try turning off the antivirus, it may conflict with other software.

In the vastness of the RuNet, I found another interesting method, but you can use it only at your own peril and risk! Find Prefetch folder, located in the C:\WINDOWS\Prefetch section and delete it. Then find the Tasks folder (C:\WINDOWS\system32\Tasks), open it and delete all files from it. Now launch the task manager, delete the entire svchost.exe task tree, and then restart the computer. I talked about this folder in the article about the load on the screw.

Lack of power supply

Well, the last thing that can cause an unnatural load on the processor is the power supply. If the power supply does not supply enough power to the computer, the processor can be loaded up to 100% of simple tasks. I recommend checking the power supply and all computer hardware using .

Quite often situations occur when users, noticing that their computers are slowing down, to put it mildly, open the task manager and see an interesting picture there. The processor is 100% loaded, although no “heavy” applications are running. It is not known why the processor is fully loaded and causes the PC to slow down and freeze.

In this article we will give some practical advice on how to solve this problem.

Reasons why the processor may be 100% loaded

Now we will list the most likely reasons for the processor being almost completely loaded when there are no running programs or games at first glance.

1. Background work system processes installation and downloading of operating system updates, as well as its maintenance;
2. Viral activity;
3. Physical obsolescence of the processor.

Now about each in more detail.

Running background system processes

The Windows 7 operating system, like any other, is updated periodically. This process in most cases, it happens hidden from the user and the service is responsible for it.

svchost loads the processor

It is also possible that the OS will be periodically checked for threats using built-in security tools.

It doesn't really matter which one system service loads the processor. Something else is important. That it usually lasts no more than a couple of hours. Therefore, the first thing to do when detecting increased activity and processor load is to simply leave the computer for a few hours to give it the opportunity to do all its “maintenance business.”

Viral activity and viruses - miners

The second very common reason why a computer without visible programs loads its processor to 100% is unclear. malware. For example, the so-called virus miner is now very popular. It gets onto your computer most often when downloading and installing something from the Internet. And the essence of its work is simple - when it hits your computer, special algorithms are launched to mine bitcoins on your computer and send the results via the Internet to a specific address. In this way, attackers make money on your computer, thereby leaving you with a slow computer, since its processor is 100% loaded. At the same time, they are disguised as the names of system processes!

Therefore, if, after several hours of inactivity, your computer has not reduced the processor load, we advise you to use several different updated antiviruses.

Obsolescence of the computer and processor in particular

There is also a situation in which the computer is simply outdated and its processor simply cannot cope with the background system tasks of maintaining and protecting the operating system. But this is only possible on really old processors 10 or more years old with 1 core.

Conclusion

As you can see, there are not many possible options. And the method to fix the problem with CPU usage at 100 percent is as follows:

1. We check the processor to make sure it is not too old;
2. We leave the computer turned on and connected to the Internet for several hours;
3. We check it for viruses;
4. You can also open the task manager, sort processes by CPU load and read about the process that uses the most CPU on the Internet;
5. As a last resort, if all else fails, reinstall Windows and immediately .

The computer is terribly slow, long loading(reboot) Windows. CPU 100 percent loaded. The cooler (fan) is humming and does not have time to cool the CPU. The sound in the speakers can be greatly distorted: wheezing, pulling, grunting. :)

However, if you open the task manager and look at the “Performance” tab, you will most likely see 100% CPU usage. Sometimes the dispatcher does not open, which means it is blocked by a virus and you need to unblock the dispatcher.

What to do? If you briefly install the security task manager, identify the slow process, remove the malware that creates maximum 100% CPU load.

100 CPU load

Severe slowdown occurs even after repeated installations and uninstallations of various programs, during long or short periods of using the PC. And as a rule, this can be 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, this happens, but not always with 100% CPU.

This also happens when malware gets into the system, which happens very, very often. The computer suddenly fails and this happens mainly during 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 you can still work on the PC, then if such a pest gets in and is activated, it is almost impossible to perform any actions on the computer.

100% CPU is a virus

To identify such guests that create 100% processor load, there is a very good utility. I say it’s not bad because I myself found myself in such a situation and she helped me 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 prevents Windows from working correctly (in its opinion). And you decide for yourself what you need and what you don’t. If a program is at risk in the first position, and you have not installed it and do not know what it is, remove it immediately.

Install the manager and remove malware that interferes with the normal operation of the CPU.