Why is the CPU busy and how can I reduce CPU usage? Google Chrome heavily loads the processor: get rid of the miner The browser loads the CPU up to 100 percent.
A large number of people often encounter a problem when the processor starts to heat up, and not just heat up, but actually overheat, overclocking itself to 100%. If you dig a little deeper, it turns out that the problem is in the browser. At the same time, it does not matter at all which browser is installed (Google Chrome, Opera, Mozilla, Yandex), anyone can load the PC. What to do in such situations and how to resolve the error?
We are looking for the reason for the high load
There may be several reasons for this action. However, from the most banal to various extraordinary ones, which simply cannot be eliminated in 5 minutes. At the same time, it is very important to take into account the power of the computer.
Here are the main reasons:
- Too many windows (tabs) open;
- A large number of active processes. It happens that you close the game, but the process continues to work;
- Outdated version of the program;
- Banal viruses;
- Addons, extensions, plugins. They can load the processor and prevent it from functioning normally. Especially if they were not launched from licensed portals.
Remember the addresses of official stores. Mozilla has it addons.mozilla.org, for Chrome - chrome.google.com/webstore, for Opera - addons.opera.com. With Yandex, everything is much simpler, since their store is synchronized with all current browser platforms and add-ons can be downloaded from there.
Perhaps the reasons are not entirely in the browser:
- Driver conflict. If you don't have Windows 10, you have to install drivers manually. Perhaps you installed outdated “firewood” or incompatible with this OS;
- Svchost.exe can also negatively affect the CPU. More precisely, its viral analogue. Various viruses are often disguised as this file, and it is quite difficult to distinguish the real, necessary svchost. But probably;
- Normal dust, dirt, hot room, broken fan, etc.
Removing the processor load by 100%
Check how Windows works for you without launching a web browser. If everything is in order, then the problem is definitely in the Internet Explorer. To reduce the load on the processor caused by the browser, the first thing you need to do is:
In the case of Chrome, go to “Settings” - “Advanced” - below it will be “Reset settings and remove malware”. Scan the program.
Current methods
General Windows check
- Launch “Command Prompt” (Win + R - write cmd) as administrator. We write in the window sfc/scannow and wait for the process to complete. The option allows you to find and restore “broken” files;
- If you have Windows 7, download Microsoft Fix it. Use it to reset the network;
- Run cmd through the steps described above, write - netsh int ip reset logfile.txt. Restart your PC.
Results
All of the above methods will not help remove 100% of the CPU load caused by browsers - you will need to reinstall them. Moreover, after uninstalling, use cleaning via CCleaner, and then install again. Keep in mind that your OS must have current KB updates, but the service itself must be disabled.
Many users experience CPU or disk loads when running the browser. Basically, the loads are small, but there are times when the values rise to 100 percent. This situation can be caused by either one active browser or any of the launched ones (Yandex, Google Chrome, Opera, Mozilla). Today we will tell you what steps you need to take first to reduce your load.
Causes
There can be many sources of such load. First of all, it’s worth mentioning banal things - too many active windows (we’re watching a movie in one, processing photos in another, downloading a file, etc.). High loading is also caused by viruses (advertising Trojans, hijackers), which, in principle, are now focused on such applications. You should not discard the optimization of the system itself - an outdated build of Windows often begins to fail. In any case, there can be many sources, so it’s worth performing standard operations.
Fixing 100 percent load
Operations to reduce workload can be divided into two stages - simple and complex actions. Simple actions mean rebooting, cleaning, updating. Start with simple steps; not all of them will be effective, but they will definitely not be superfluous in optimizing your work. If simple things like restarting the browser and PC do not help, you need to do the following.
Cleaning the browser and operating system
Checking the system parameters
Conclusion
If the browser still loads the processor up to 100%, you will need to remove it, apparently its packages are faulty somewhere. You can uninstall the program as standard and clean up residual folders in CCleaner (option Cleanup – Registry). You need to download the new installation only from official resources. In rare cases, your hardware simply no longer supports the configuration of such programs, so here you need to roll back the browser version to an earlier one. But the main thing to remember here is that older versions do not support many technologies (HTML5, video codecs, etc.).
Updated: Monday, July 31, 2017
This week I came across a website for the first time, the page of which crashed my browser. This trouble happened to everyone’s favorite Fox (Mozilla). The latest version update is from the developer's website. So everything is fine with the program itself.
The scroll wheel does not work, mouse commands do not execute or there is a long delay. I opened the Task Manager and see a constant CPU load of 100%. I tried to open this blog page in other browsers: Yandex browser, Google Chrome, FlashPeak Slimjet. The same picture, the processor load is full.
I can’t change the processor to another one, and why should I? Before this site everything worked fine, the load was no more than 10%. And in tablets and smartphones there is no more powerful than my single-core Celeron 2.8 GHz.
At first I thought it was some kind of virus. But this suspicion disappeared when I opened version 12.17 in Opera - the one on the old Presto engine. The load dropped to 30-50% and it was possible to read and navigate through pages.
The solution to the problem from the user's side is simple. I turned on the application I installed for Fox called NoScript. 
You need to open the Extensions tab. (step1) Select the installed Firefox add-on. (step2) Click the Enable button. If you do not have such an extension installed, then you need to go to the developer’s website and download it. 
Additional protection for Firefox: NoScript allows you to allow JavaScript, Java (and other plugins) only for trusted domains you select (eg: banking site). Whitelisting, based on the principle of proactive blocking, allows you to prevent the exploitation of vulnerabilities (known and not yet known!) without losing functionality... Experts agree: Firefox is truly safer with NoScript
After restarting the browser, go to the same page. Everything works as usual, the processor does not choke. Navigation and mouse listen to the user. 
The solution for the site administrator is different. You need to find the problematic JavaScript and rewrite it yourself if you know programming languages. Or look for a programmer who works with scripts.
Let's figure out why the browser loads the processor at 100%. It could be Yandex browser, Opera, Google Chrome, Mozilla or any other. What's the matter? Why does the processor overheat when accelerating at full speed?
What is the reason?
There are more reasons than you might think. At the same time, some are easy to eliminate, while others can only be dealt with by a specialist. The power of the computer itself plays an important role in this process. Sometimes this is the determining factor.
The main reasons usually include:
📌 Opening a large number of tabs. If you are looking for something on the Internet and at the same time opening page after page, then the computer may not be able to cope with it. At some point it will start to slow down. The solution is very simple - close all tabs and you don’t even need to reboot. The processor will be restored. The more powerful the computer, the more tabs you can open at once, roughly speaking.
📌 Too many workflows. Look in the tray, or you can also go to the task manager (CTRL + Alt + Del). Sometimes there are a lot of tasks and active processes that you might have forgotten about. For example, a running game, keeper, even a heavy Excel file can overload the system. Complete at least some of them, and the load will decrease.
📌 Outdated browser version. If you haven’t updated for a long time and the previous points are not for you, try updating your browser to the latest version. Download only from an official source. To be sure, reboot after installation.
📌 Viruses. It is never a bad idea to check your computer for viruses. A standard run through the database will at least help eliminate this option.
📌 Extensions and plugins. Any browser has extensions for more convenient and complete work in it. Some of them may load the processor or interfere with normal functioning. If you installed only official applications, there are fewer risks. To check this point, try disabling one application at a time and see how the computer behaves.
If unofficial plugins were to blame in your case, try to use only those offered at the following links: for Mozilla - addons.mozilla.org, for Opera - addons.opera.com, for Chrome - chrome.google.com/webstore.
When the reason is not in the browser
It happens that the reason lies not in the browser, but in the computer itself:
📍 Driver conflict. This happens when drivers are installed manually. For example, you might be using outdated or incompatible drivers. If you didn’t do anything yourself, then it’s unlikely that it’s them, but if you installed them, you probably remember which ones. By updating or eliminating them, you can see the solution.
📍 Negative impact of viralsvchost.exe. svchost.exe itself is not a virus! But the virus that imitates it, yes, it is dangerous for the system.
📍 External factors. As a last resort, check for dirt and dust in the computer. It may be too hot or the fan may be broken. Physical causes do not happen often, but usually they make themselves felt immediately.
How to remove the load 100%
By studying the most common causes, you may have already figured out the problem, but if this is not the case, try the following step by step:
- Delete cache, history, cookies in your browser. You can even reconnect the user.
- Go to the “Task Manager” (in the tenth version of Windows, right-click on Start and select the desired item in the menu that opens). Look in the “Dispatcher” for everything that loads the CPU and feel free to turn it off.
Now for individual browsers:
- Install FlashBlock. This is an application that is suitable for Google Chrome and Yandex Browser; it blocks scripts and unwanted programs.
- For Mozilla, enter about:config in the search bar and write browser.cache.disk.capacity. Replace element 16384 by restarting the computer. In some cases, this also helps: enter about:config, write dom.ipc.plugins.enabled and change the files to false. Don't forget to reboot.
- For Chrome, you can also go to “Settings”, from there to “Advanced” - “Reset settings and remove malware”. Scan. By the way, if you follow the path C:\Program Files\Google\Chrome\Application\chrome.exe and there are more words at the end, then this is probably an infected version.
What else can you do?
Did not help? Then we act even more radically. You can take separate steps, or you can do them all at once, just to be sure:
- Please update your browser. Make sure to do this from the official website.
- Disable JavaScript. To do this, go to “Settings” - “Tools” and there uncheck the “Enable JavaScript” item.
- Install Sysinternals Suite, which needs to scan the Task Manager. The fact is that the standard “Task Manager” does not show the whole picture.
- Do a standard computer cleaning using CCleaner. AdwCleaner and Dr.Web Cureit also help with this.
- You can disable auto-update. To do this, go to “Start” - “Control Panel” - “Administration” - “Services”, where we select “Windows Update” - “Stop”.
As a preventative measure, you can perform a general Windows scan. What can be done:
- Launch the command line (Win+R), write sfc/scannow there and wait for the process to finish. Using this option you can find broken files.
- For Windows 7, you can install Microsoft Fix it and use it to reset the network. Do it only if you understand what it is about.
- Run a cmd line and write netsh int ip reset logfile.txt, rebooting your computer.
So, we figured out why the browser loads the processor at 100%. At the same time, as you can see, it doesn’t matter whether the browser is Yandex or Chrome. In any case, start with the easiest and most obvious solutions, and they will certainly help. Share your experience if it worked.
After using the system for a long time, it begins to slow down, and various kinds of problems arise that users are not always able to solve. One of the main reasons for a slow PC is the CPU utilization at 100 percent. And it’s not always clear why this problem arises.
There are two reasons - hardware room And software. The second, of course, appears much more often, so we’ll start with it. There could be viruses, unknown processes, anything. In this article I will try to help you understand the CPU load at 100%.
If there is a suspicion that the processor is loaded at 100 percent
Go to Device Manager (keyboard shortcut Esc+Shift+Ctrl) and go to the tab "Performance". In the CPU section there is a graph that will let you know how much the processor is loaded, as well as a line "Usage". If the load is still 100 percent, then it is worth taking action.
Software type problem
When you open the task manager, you need to find the process that is using the processor. This can be done by any program installed on a PC, or by a virus. Perhaps you didn’t find anything worthwhile in the “Processes” tab, then go to the tab "Details", it shows all the running processes and try to find the one that is using the CPU the most. If you don't know what to complete, I recommend contacting an experienced specialist.
Of course, using the task manager it is not always possible to find the required process, then a third-party utility comes to the rescue Process Explorer. Run it and sort the processor by load (CPU) and see what it gives us.
Download Process Explorer: https://technet.microsoft.com/ru-ru/bb896653.aspx
Sometimes, the real culprit of the load may appear, and then you can close it without problems, but there is another situation when it is the system process that is loading the CPU. Often this can be a process of system interrupts and getting rid of this is not always easy. Of course, sometimes a simple reboot helps.
System interruptions can occur for several reasons: viruses, problems with the hard drive and drivers, problems with printers, scanners and any other devices connected to the computer.
Drivers
You can check whether the reason is really in the drivers as follows: boot into safe mode and check the CPU load, if not 100%, then the drivers are definitely playing pranks. You can try to remove the video card driver and check the load; if that fails, then you will have to remove everything altogether. Although this is a rather risky process, which ultimately still involves reinstalling the system.
Problem due to viruses
Viruses are capable of many things, and CPU usage is no exception. They can even hide under the guise of system processors, so the average user will not even understand. Try using several utilities to scan your PC for viruses, I will give several links to such programs and how to use them.
Hard drive problem
In general, this doesn’t happen often, but I’ll also describe this point to be on the safe side. Hard drives have two operating modes - DMA And PIO. The first involves working directly with RAM, while the second is outdated and uses the processor during operation. Naturally, if your hard drive is running in PIO mode, then you need to switch. This article describes how to do this.
Peripheral problem
The easiest way to check if peripherals are the culprit of CPU usage is to disable everything in order. Also, go to the device manager and check if drivers are installed on all devices. If a yellow triangle or a red icon is lit there, then such a problem may have occurred due to the lack of drivers.
You can get to the device manager like this: press the keys Win+R and enter the command there devmgmt.msc .
If you see a lack of drivers on some devices, update them directly from the device manager, or use third-party utilities.
Hardware problems with CPU utilization at 100%
Dealing with hardware problems is a little more difficult than software problems, especially for an inexperienced user. But we will try.
A common cause of load is overheat. What do you think causes it? Most likely due to a poor cooling system or dust.
First, let's check with AIDA64 or any other similar processor utility. In AIDA64, open the tab "Computer" and go to the section "Sensors".
In this case, it would be wise to check the CPU cooling system first. Open the computer or laptop case and, preferably, clean all components. For cleaning, use a brush and vacuum cleaner. Cleaning often is not necessary, but at least 2 times a year is necessary. We make sure to change the thermal paste on the processor about once every 3 years.
Of course, the described methods do not fully solve the problem with the processor. Hardware problems can even include damage to the processor, which is rare, but the only recommendation in this case is to replace it. This can be problematic on a laptop, since they often cannot be replaced. In general, explore and if you have questions, ask them in the comments.