无论CPU^(CPUs)变得多么强大，总会有一些东西会耗尽所有资源。也许最令人沮丧的问题是由于系统中断导致的高 CPU 使用率。^{(fix is high CPU usage)}提示：它几乎总是由硬件或设备驱动程序引起的。

以下是解决^{(steps to troubleshooting)}此问题的步骤。我们将在下面更详细地介绍。它们从最简单到最复杂的顺序列出：

1. 重新启动计算机
2. 更新^(Update)驱动，检查windows更新
3. 禁用快速启动
4. 禁用魔术包
5. 逐一禁用硬件设备
6. 检查硬件故障
7. 更新 BIOS

在这些步骤中的每一个之后，使用任务管理器^{(use Task Manager)}查看系统中断的^{(System Interrupts)}CPU使用率是否下降。

什么是系统中断？^{(What Is a System Interrupt?)}

信不信由你，计算机一次只能做一件事。他们只是做得非常快，所以看起来他们在处理多项任务。 

您计算机中的硬件必须要求完成任务。有时他们不得不打断其他任务。就像孩子打扰父母一样。孩子们^(Kids)的需求也很重要，但引起大人的注意可能会很顺利，也可能会造成破坏。硬件系统中断也是如此。

系统中断应该使用多少 CPU？^{(How Much CPU Should System Interrupts Use?)}

也许您正在查看它并认为 5% 太高了。它可能因计算机而异，但如果高于 10%，则存在问题。是时候做点什么了。

重新启动计算机^{(Restart the Computer)}

您是否尝试将其关闭然后再打开？是的，又是那个老栗子。为什么？因为它经常起作用。 

启动 Windows^{(starting Windows)}有十亿件事情，有时事情并不顺利。再试一次，它可能会顺利。这是最简单、最容易、最快的事情，而且它经常起作用。

更新驱动程序 ^{(Update the Drivers )}

由于高CPU系统中断问题几乎总是与硬件相关，请尝试更新驱动程序。这是一种简单易行的方法，通常很有效。另外，最好始终保持驱动程序更新^{(always keep drivers updated)}。

1. 选择开始^{(Start )}按钮。
2. 开始输入设备^(device)并选择设备管理器^{(Device Manager)}。

1. 展开^(Expand)每个元素，直到您了解特定设备。右键单击并选择更新驱动程序^{(Update driver)}。

1. 选择自动搜索更新的驱动程序软件^{(Search automatically for updated driver software)}。如果您已经下载了驱动程序并知道它在哪里，您可以选择浏览我的计算机以获取驱动程序软件。^{(Browse my computer for driver software )}

1. 如果找到驱动程序，请安装它。您也可以尝试在 Windows Update 上选择搜索更新的驱动程序^{(Search for updated drivers on Windows Update)}。

1. 在Windows 更新中，^{(Windows Update,)}选择检查更新^{(Check for updates )}，即使它显示您是最新的^{(You’re up to date)}。它可能会让你大吃一惊。

禁用快速启动^{(Disable Fast Startup)}

Fast Startup 的工作是让您的计算机进入深度睡眠^{(put your computer into a deep sleep)}，看起来好像它已经关闭了。所以当你再次启动它时，它更像是唤醒它。这种深度睡眠状态有时会导致硬件出现问题。 

其背后的原因很复杂，超出了本文的范围。为此，您需要计算机上的管理员权限^{(need Administrator privileges)}。

1. 选择开始^{(Start )}按钮并开始输入control。
2. 选择控制面板^{(Control Panel)}。

1. 在控制面板中，搜索power。
2. 选择更改电源按钮的功能^{(Change what the power buttons do)}。

1. 选择更改当前不可用的设置^{(Change settings that are currently unavailable)}。如果您看到蓝色和黄色的盾牌，则意味着您需要在这台计算机上拥有管理员^{(Administrator)}权限。

1. 取消选中打开快速启动^{(Turn on fast startup )}框。
2. 选择保存更改^{(Save changes)}。

禁用魔术包^{(Disable Magic Packet)}

这不可能真的是一回事，不是吗？是的，Magic Packet是真实的。它允许您的计算机在从本地网络接收到Magic Packet时从待机或睡眠模式中唤醒。^{(Magic Packet)}您可能听说过这称为LAN 唤醒^{(Wake On LAN)}(WOL)。

1. 选择开始^(Start)按钮并开始输入设备管理器^{(device manager )}以查找实用程序。
2. 选择设备管理器^{(Device Manager)}。

1. 导航到网络适配器^{(Network Adapters)}并右键单击您的以太网^(Ethernet)适配器。选择属性^(Properties)。

1. 在“属性^(Properties)”窗口中选择“高级^{(Advanced )}”选项卡。
2. 在“属性”^{(Property )}窗格中，向下滚动到Magic Packet，然后单击将其选中。
3. 在Value:选择框中，将其更改为Disabled，然后选择OK按钮以提交更改。可能需要几秒钟。 

逐一禁用硬件设备^{(Disable Hardware Devices One by One)}

某些硬件无法拔出。这是一个一个禁用它们的方法。当您找到降低系统中断 CPU^{(System Interrupt CPU)}使用率的那个时，那就是要修复的硬件。

1. 选择开始^(Start)按钮并开始输入设备管理器^{(device manager )}以查找实用程序。
2. 选择设备管理器^{(Device Manager)}。

1. 浏览^(Navigate)树以查找对计算机不重要的硬件。如果您不确定什么是关键或不重要，请继续使用下一个方法。右键单击^{(Right-click)}不重要的硬件，然后选择Disable device。

1. 它会警告你。如果您确信禁用设备是安全的，请选择Yes。

1. 检查任务管理器中的^{(Task Manager )}系统中断^{(System Interrupts )}CPU 使用情况，看看它是否已关闭。如果没有，请在设备管理器^{(Device Manager)}中找到另一块硬件并将其禁用。逐一执行此操作，直到您解决问题或用完可禁用的硬件。

一个一个地移除外部硬件^{(Remove External Hardware One by One)}

您可能已经在以前的方法中禁用了外部硬件。但也许你错过了什么。

1. 打开任务管理器^{(Task Manager )}并专注于系统中断^{(System Interrupts)}
2. 一次从计算机上拔下一个^{(Unplug one)}设备，然后等待片刻。查看系统中断^{(System Interrupts )}CPU使用率是否下降。如果没有，请转到下一个设备。
3. 如果您以这种方式找到设备，请更新其驱动程序并重试。此外，请查看硬件制造商的支持页面。

检查故障硬件^{(Check for Failing Hardware)}

一个硬件可能接近故障并间歇性地导致系统中断^{(System Interrupts)}高CPU问题。使用我们的如何诊断、检查和测试坏内存^{(How to Diagnose, Check, and Test for Bad Memory)}作为检查 RAM 的指南。 

我们还分享了 15 个 Windows 诊断工具来改善您的 PC 的健康状况^{(15 Windows Diagnostics Tools to Improve Your PC’s Health)}。特别有用的是HWiNFO和CrystalDiskInfo。两者都可以作为便携式应用程序从USB记忆棒上运行，因此它们不需要完整安装。

更新 BIOS^{(Update BIOS)}

这是你应该做的最后一件事。BIOS 可能会变坏并使您的计算机无法使用，可能需要更换新主板或更换计算机。所以首先，检查是否需要更新 BIOS^{(check if a BIOS update is needed)}。 

链接指向的文章还告诉您如何进行更新。如果您不习惯这样做，请将您的计算机带到一家受人尊敬的计算机商店。他们还可以为您检查硬件。

系统中断 CPU 使用率仍然过高^{(The System Interrupts CPU Usage is Still Too High)}

你有两个选择。将计算机交给经过认证的合格计算机技术人员或升级计算机。不要难过，你已经尽力了。请记住^(Remember)，平均计算机的最长寿命是 5 年。每一年对你的电脑健康来说就像 14 年。善待它。

How to Fix System Interrupts High CPU Usage in Windows 10

No matter how powerful CPUs get, there’s always going to be something that uses up all the resources. Perhaps the most frυstrating issue to fix is high CPU usage because of system interrupts. Hint: it’s almost always caused by hardware or device drivers.

The following are the steps to troubleshooting this issue. We’ll go into greater detail below. They’re listed from the easiest to the most complicated:

1. Restart the computer
2. Update driver, check for windows updates
3. Disable Fast Startup
4. Disable Magic Packet
5. Disable hardware devices one by one
6. Check for hardware failures
7. Update BIOS

After each of these steps, use Task Manager to see if CPU usage for System Interrupts has dropped.

What Is a System Interrupt?

Believe it or not, computers can only do one thing at a time. They just do it really fast, so it seems like they’re multitasking. 

The hardware in your computer has to ask to get their tasks done. Sometimes they have to interrupt other tasks. It’s like kids interrupting parents. Kids’ needs are essential too, but getting an adult’s attention can go well or be disruptive. The same goes for hardware system interrupts.

How Much CPU Should System Interrupts Use?

Maybe you’re looking at it and thinking 5% is too high. It can vary from computer to computer, but if it’s higher than 10%, there’s an issue. It’s time to do something.

Restart the Computer

Have you tried turning it off and then on again? Yes, that old chestnut again. Why? Because it often works. 

There are a billion things that go into starting Windows and sometimes things don’t go right. Try it again and it might go right. It’s the simplest, easiest, fastest thing to do, and it works more often than not.

Update the Drivers 

Since the high CPU system interrupt issue is almost always hardware related, try updating the drivers. It’s a simple and easy approach that often works. Plus, it’s good to always keep drivers updated.

1. Select the Start button.
2. Start typing device and select Device Manager.

1. Expand each element until you get down to specific devices. Right-click and select Update driver.

1. Select Search automatically for updated driver software. You could choose to Browse my computer for driver software if you’ve already downloaded the driver and know where it is.

1. If it finds a driver, install it. You can also try selecting Search for updated drivers on Windows Update.

1. In Windows Update, select Check for updates even if it says You’re up to date. It might surprise you.

Disable Fast Startup

Fast Startup’s job is to put your computer into a deep sleep that it seems like it’s off. So when you start it again, it’s more like waking it up. This deep sleep state can sometimes cause problems for hardware. 

The reasons behind that are complex and beyond this article. To do this, you’ll need Administrator privileges on the computer.

1. Select the Start button and start typing control.
2. Select Control Panel.

1. In the Control Panel, search for power.
2. Select Change what the power buttons do.

1. Select Change settings that are currently unavailable. If you see the blue and yellow shield, that means you need to have Administrator rights on this computer.

1. Uncheck the Turn on fast startup box.
2. Select the Save changes.

Disable Magic Packet

That can’t really be a thing, can it? Yes, Magic Packet is real. It allows for your computer to awaken from standby or sleeping mode when it receives the Magic Packet from the local network. You may have heard this called Wake On LAN (WOL).

1. Select the Start button and start typing device manager to find the utility.
2. Select Device Manager.

1. Navigate to Network Adapters and right-click on your Ethernet adapter. Select Properties.

1. Select the Advanced tab in the Properties window.
2. In the Property pane, scroll down to Magic Packet and select it with a single click.
3. In the Value: select box, change it to Disabled, and select the OK button to commit the change. It may take a few seconds. 

Disable Hardware Devices One by One

Some hardware can’t be unplugged. Here’s how to disable them, one by one. When you find the one that drops the System Interrupt CPU usage, that’s the hardware to fix.

1. Select the Start button and start typing device manager to find the utility.
2. Select Device Manager.

1. Navigate through the tree to find hardware that isn’t critical for the computer. If you’re not sure what’s critical or not, move on to the next method. Right-click on the hardware that’s not critical, and select Disable device.

1. It will warn you. If you’re confident it is safe to disable the device, select Yes.

1. Check System Interrupts CPU usage in Task Manager to see if it’s gone down. If not, find another piece of hardware in Device Manager and disable it. Do this one by one until you solve the problem or you run out of hardware to disable.

Remove External Hardware One by One

Chances are you already disabled external hardware in the previous method. But maybe you missed something.

1. Have Task Manager open and focus on System Interrupts
2. Unplug one device at a time from your computer and wait a few moments. See if the System Interrupts CPU usage drops. If not, move on to the next device.
3. If you find the device this way, update its drivers and try it again. Also, check the hardware maker’s support page.

Check for Failing Hardware

It’s possible that a piece of hardware may be close to failure and intermittently causes the System Interrupts high CPU issue. Use our How to Diagnose, Check, and Test for Bad Memory as a guide to check your RAM. 

We also share 15 Windows Diagnostics Tools to Improve Your PC’s Health. Especially useful is HWiNFO and CrystalDiskInfo. Both are available as portable apps to run from a USB stick, so they don’t require a full installation.

Update BIOS

This is the last thing you should do. BIOS can go bad and make your computer useless, possibly requiring a new motherboard or replacing the computer. So first, check if a BIOS update is needed. 

The article the link goes to also tells you how to do the update. If you’re not comfortable doing this, then take your computer to a respected computer shop. They can also check the hardware for you.

The System Interrupts CPU Usage is Still Too High

You have two choices. Take the computer to a certified, competent computer technician or upgrade the computer. Don’t feel bad, you’ve done your best. Remember, the average computer’s maximum life span is 5 years. Each year is like 14 years to your computer’s health. Be kind to it.

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