What is a “System Interrupts” and why is it running on a computer?


When you look at the Task Manager window, you may have noticed a process called “System interrupts” that does not care about it. However, when this process uses the CPU and you wonder what it is and why it uses the CPU? Please read the following article for answers.

What is the System Interrupts Process?

System Interrupts is an official part of Windows and although it appears as a process in Task Manager, it is not essentially a process in the traditional sense. Instead, it is a synthetic placeholder that is used to display the system resources used for hardware interruptions that occur on a computer.

Hardware interrupts are the normal process of communication between the hardware (and the software involved) with the CPU. For example, when typing the keyboard, instead of tracking the signal from the keyboard, only a portion of the hardware on the motherboard handles the signal. When defining another hardware part that needs CPU, it sends a break to the CPU. If this is a priority interrupt (usually a user input), the CPU stops any process that is working, resolves this interrupt signal, and then continues its previous process.

All this happens very quickly and often the interrupt occurs continuously. In fact, you can see the interrupt taking place by opening Task Manager and scroll down until you see “System interrups” in the window, now open Notepad and type. This action will not significantly affect the “System interrupts” setting, but you will see it increase by one-tenth percent percent or more. In this case, it has risen from 0.1% to 0.3%.

During normal operation, you can see that the CPU usage of the “System interrupts” process increased to 10% in a short time before it dropped to zero.

Why do system interrupts use too much CPU?

If you see a 20% increase in system interrupts and no change, you may be experiencing problems. Since CPU usage indicates hardware interruptions are taking place on a computer, if the amount of CPU usage is high, it means that a hardware or driver involved in it is not working or working properly. So you need to fix the hardware problem.

The first step you should take is to restart the computer. Sure, you’ve heard many people say that restarting your computer can fix many problems and this is the first step to take when fixing any problems.

If the computer restarts does not solve the CPU usage problem, the next step is updating the computer. Let Windows Update do the updating, so that you can get the latest Windows updates, drivers. Also, you should also check for drivers that are not managed by WIndows Update.

If your computer and hardware driver updates do not solve the problem, then you need to find out the specific hardware that causes high CPU utilization.

To check the hardware problem, please disable each one. You should start with micro devices as this is the easiest part to check. Check devices such as keyboards, mice, webcams and headsets by disconnecting each device one by one and see if the CPU in “System interrupts” goes down. If so, it is the device causing the problem.

After you have checked all the peripherals and still can not find them, you should switch to the internal devices. Obviously testing these devices is more difficult than peripherals because you can not remove them from your computer. You can, however, disconnect these devices in Device Manager, but be careful when working here to avoid disabling important devices in your system operation such as drive or display adapter. . Also, do not disable anything listed in the Computer, Processors, or System Device category, focusing only on devices such as network adapters, sound cards, and additional cards. These are the most likely culprits causing the problem, just disable each device and check the “System interrupts” section in Task Manager.

Having a few other pieces of hardware can cause problems and you will not be able to test this way. Failure to provide power (or laptop battery) can cause an increase in CPU usage of system interrupts and therefore lead to hard drive failure. You can check the hard drive with the tools available in Windows is Check Disk or third-party tools, SMART utility. However, the only way to test the power supply is to replace it.

If the cause is determined by a device, the next step you need to do is determine whether it is the device or the hardware driver is the culprit. Here are some tips to help you find the cause of the problem.

  • Try external devices on another computer if available.
  • If the driver has been updated and you think that the device is OK, you can go back to the previous version of the driver.
  • Visit Google or the hardware manufacturer’s website to see if others have the same problem.
  • Consider updating the BIOS. If it is not possible to find the cause, maybe the hardware responsible for the interrupt is experiencing problems, updating the BIOS can sometimes fix the problem.

Is it possible to disable “System interrupts”?

No, you can not disable “System interrupts” and there is no reason to do so. This is an important component for computer performance as it is used to handle and report on hardware interrupts. Windows will not allow you to temporarily “end task” the process.

Can this process be a virus?

“System interrupts” are an official component of Windows, it’s almost certainly not a virus. Actually, since it’s not a process in the right sense, “System interrupts” do not even have an .EXE or .DLL file involved. This means that there is no way for the malware to penetrate.

However, it is possible that a virus is interfering with a particular hardware driver, which may affect system interrupts. If you suspect any type of malware, use anti-virus software to scan your computer.