当您的磁盘使用率突然无缘无故地达到 100% 时，这令人惊讶。幸运的是，有多种方法可以在 Windows 10 PC 上修复此错误。

由于大多数情况下实际原因尚不清楚，因此请按顺序执行以下方法，其中一种应该可以解决您的问题。

在开始之前，您可以尝试通过转到Windows 10^{(Windows 10)}中的任务管理器^{(Task Manager)}并查找占用磁盘的进程或程序来缩小问题范围。您可以右键单击开始^(Start)按钮并选择任务管理器^{(Task Manager)}，也可以同时按Ctrl + Shift + Esc将其打开。 

单击进程^(Processes)选项卡，然后单击磁盘^(Disk)列的标题对其进行排序。在执行下面的方法 2 和 3 时，您可以从使用磁盘百分比最高的进程开始。 

1.重启你的电脑

当您重新启动 PC 时，许多临时设置会被重置。这对于修复各种类型的问题很有用，并且可能修复 100% 磁盘使用问题。

要重新启动 PC，请打开“开始^(Start)”菜单，选择电源^(power)图标，然后选择“重新启动^(Restart)” 。

2.禁用启动程序

如果您的 PC 在您首次登录计算机时显示 100% 的磁盘使用率，但几分钟后使用率稳定下来，则您的启动程序可能是罪魁祸首。这些程序在您的 PC 启动时启动，它们会占用大量资源。

在这种情况下，您应该关闭所有这些启动程序，^{(turn all these startup programs off)}并按照下面列出的步骤查看是否可以提高磁盘使用率：

• 右键单击开始^(Start)菜单，然后单击任务管理器^{(Task Manager)}。
• 单击弹出窗口左下方的更多详细信息。^{(More Details)}
• 选择启动^(Startup)选项卡。右键单击列表中的每个程序并选择禁用^(Disable)。

• 重新启动您的 PC 并查看问题是否已解决

完成此测试后，您始终可以重新启用任何启动程序。还值得注意的是，禁用程序的启动不会将其卸载。您可以随时运行该程序，只需手动启动它。 

3. 对您的 PC 执行干净启动

当您干净启动Windows 10 PC 时，它只会加载选定的程序和服务。这有助于识别可能导致磁盘使用率达到 100% 的特定应用程序。禁用已识别的应用程序以查看问题是否得到解决。

在Windows 10中，使用内置的系统配置^{(System Configuration)}应用程序执行干净启动^{(perform a clean boot)}。我们有一个关于如何做到这一点的专门指南，所以请检查一下。这是一个耗时的过程，但它非常适合这些类型的情况。 

4.更新你的电脑

您应该始终在最新的 Windows 更新^{(install the latest Windows updates)}可用时立即安装它们，因为它们会安装错误修复以提高性能，并且还可以修复您的磁盘使用问题。

请按照以下步骤更新您的 Windows 10 电脑：

1. 按键盘上的Windows + I打开设置应用程序。^(Settings)
2. 选择底部的更新和安全。^{(Update & Security)}

1. 选择左侧的Windows 更新^{(Windows Update)}。
2. 选择检查更新^{(Check for updates)}按钮。

1. 等待^(Wait)Windows找到较新的更新并安装可用的更新。^(Windows)

重新启动^(Reboot)您的 PC 以确保新安装的更新正常工作。

5.禁用计划的磁盘碎片整理^{(Disk Defragmentation)}

如果Windows 10仅在特定时间显示 100% 的磁盘使用率，则计划的磁盘碎片整理^{(disk defragmentation)}可能是原因。这是因为碎片整理任务会在预定时间自动运行并使用大量磁盘空间。

关闭计划的磁盘碎片整理，看看是否可以解决您的问题。 

您始终可以使用碎片整理实用程序手动运行碎片整理任务。^{(manually run a defragment task)}

1. 打开开始^(Start)菜单并搜索碎片整理和优化驱动器^{(Defragment and Optimize Drives)}。选择第一个结果。

1. 选择优化驱动器^{(Optimize Drives)}窗口上的更改设置^{(Change settings)}按钮。

1. 取消选择按计划运行（推荐）^{(Run on a schedule (recommended))}框，然后选择底部的确定。^(OK)

将来，如果您需要对磁盘进行碎片整理，请选择上述实用程序中的“优化^(Optimize)”按钮。这将运行手动碎片整理任务。

6.删除临时文件

许多Windows 10功能和已安装的应用程序会创建不需要保留的临时文件。您可以使用以下步骤清除临时文件，以查看是否可以解决 100% 磁盘使用问题。^{(clear your temporary files)}

1. 按键盘上的Windows + R打开“运行”^(Run)框。

1.  在运行中键入%temp%确定^{(OK )}打开临时文件夹。
   

1. 按Ctrl + A选择文件夹中的所有文件。

1. 右键单击任何一个文件并选择Delete。这将删除您的所有临时文件。

1. 转到您的桌面，右键单击回收站^{(Recycle Bin)}图标，然后选择清空回收站^{(Empty Recycle Bin)}。

1. 重新启动您的电脑。

希望这应该可以解决问题。  

7.修复损坏的文件

损坏的系统文件可能会导致磁盘使用率达到 100%。但是，Windows 10具有修复这些文件的内置工具。您可以按照以下步骤简单地运行命令以启用此工具。 

1. 访问开始^(Start)菜单，搜索命令提示符^{(Command Prompt)}，然后选择右侧的以管理员​​身份运行。^{(Run as administrator)}

1. 在用户帐户控制^{(User Account Control)}提示中选择是。^(Yes)

1. 在命令提示符^{(Command Prompt)}窗口中输入 sfc /scannow，然后sfc /scannowEnter：

1. Windows 在您的屏幕上显示实时修复进度。 

等待^(Wait)该过程完成，如果这不能解决问题，请继续执行以下步骤。

8. 运行安全扫描

您的 PC 显示 100% 磁盘使用率的一个可能原因是您的 PC 可能感染了病毒或恶意软件^{(your PC may be infected with a virus or malware)}。您可以运行Windows 10的内置防病毒程序，按照以下步骤从您的 PC 中查找和删除任何恶意文件。 

1. 打开开始^(Start)菜单，搜索Windows Security，然后选择第一个结果。

1. 选择病毒和威胁防护^{(Virus & threat protection)}。

1. 接下来选择扫描选项^{(Scan options)}。

1. 选择完整扫描^{(Full scan)}选项，然后选择底部的立即扫描。^{(Scan now)}

等待^(Wait)防病毒程序从您的计算机中查找并删除病毒和恶意软件，这有望解决问题。

9.修改能源选项

一些用户报告说，更改能源计划可以解决Windows 10中的 100% 磁盘使用问题。 

1. 打开开始^(Start)菜单，搜索控制面板^{(Control Panel)}，然后选择第一个结果。

1. 通过将右上角的设置更改为Category来更改视图^{(View by)}。

1. 选择系统和安全^{(System and Security)}。

1. 在下一个屏幕上选择电源选项。^{(Power Options)}

1. 确定您当前选择的电源计划，然后单击它旁边的更改计划设置。^{(Change plan    settings )}

1. 选择更改高级电源设置^{(Change advanced power settings)}。

7. 单击顶部的下拉菜单并在其他选项之间循环，并在每个选项之间重新启动 PC。例如，如果此菜单将“平衡^{(Balanced )}”作为当前选择，请将其更改为其他可用选项之一。选择底部的应用^(Apply)或确定^{(OK )}以保存更改。重新启动电脑。  

8. 如果这不能解决问题，请使用其他可用选项重复步骤 7 。^{(Step 7)}

如果这不能解决问题，您可以随时返回并选择原始能源计划，然后尝试下面提到的步骤。

10.更改谷歌浏览器选项

如果您使用谷歌浏览器^(Chrome)，此浏览器中有一些options in this browser that can cause your disk usage to reach 100%。关闭这些选项，看看这是否能解决您的问题。

1. 在您的 PC 上启动Google Chrome 。

1. 选择右上角的三个垂直点菜单。 

1. 选择设置^(Settings)。

1. 展开左侧的高级菜单，然后从展开的菜单中选择^(Advanced)系统^(System)。

1. 关闭右侧的Google Chrome 关闭时继续运行后台应用程序。^{(Continue running background apps when Google Chrome is closed)}

1. 在左侧边栏中选择隐私和安全，然后在右侧选择^{(Privacy and security)}Cookies 和其他站点数据^{(Cookies and other site data)}。

1. 向下滚动并禁用预加载页面，以便更快地浏览和搜索^{(Preload pages for faster browsing and searching)}。

如果这不能解决问题，您可以随时重新启用这些选项并继续执行下面提到的下一步。

11.关闭你的防病毒程序

如果您正在运行第三方防病毒程序，您需要通过暂时禁用它来确保它不会导致此问题。 

此外，Windows 10 还加载了一个名为Microsoft Defender Antivirus的防病毒软件，它在捕获大多数恶意软件和间谍软件方面做得非常出色，因此首先不需要第三方程序。 

12. 全新安装 Windows 10

如果上述方法都不起作用，您最后的手段是在您的计算机上全新安装 Windows 10 。^{(clean install Windows 10)}这将删除您的 PC 当前拥有的所有内容，并安装新版本的Windows 10操作系统。

确保^(Make)在执行此操作之前备份重要文件，否则最终会丢失文件。

How to Fix 100% Disk Usage on Windows 10

It’s ѕurprising when your disk usage suddenly hits 100% for no apparent reason. Lυckily, there аre a number of ways to fix this error on your Windows 10 PC.

Since the actual cause isn’t known most of the time, follow the methods below sequentially, and one of them should fix your issue.

Before you get started, you can try to narrow down the issue by going to Task Manager in Windows 10 and looking for the process or program that’s hogging your disk. You can right-click on the Start button and choose Task Manager or you can press Ctrl + Shift + Esc together to open it. 

Click on the Processes tab and then click on the header for the Disk column to sort it. When performing methods 2 and 3 below, you can start with the process that’s using the highest percentage of the disk. 

1. Restart Your PC

When you restart your PC, many temporary settings get reset. This is useful to fix various types of issues, and can possibly fix the 100% disk usage issue.

To reboot your PC, open the Start menu, select the power icon, and choose Restart.

2. Disable Startup Programs

If your PC shows 100% disk usage when you first log onto the computer, but then the usage settles down after a few minutes, your startup programs are probably the culprit. These programs launch when your PC boots and they eat up a lot of resources.

In this case, you should turn all these startup programs off and see if that improves your disk usage by following the steps listed below:

• Right click on the Start menu and click on the Task Manager.
• Click on More Details on the bottom left of the pop up window.
• Select the Startup tab. Right-click each program on the list and select Disable.

• Restart your PC and see if the issue is resolved

You can always re-enable any startup program after you complete this test. It’s also worth noting that disabling the startup of a program does not uninstall it. You can run the program any time, you just have to manually launch it. 

3. Perform a Clean Boot of Your PC

When you clean boot your Windows 10 PC it only loads selected programs and services. This helps identify particular apps that may be causing the disk usage to reach 100%. Disable the identified apps to see if the issue gets fixed.

In Windows 10, use the built-in System Configuration app to perform a clean boot. We have a dedicated guide on how to do that, so check that out. It’s a bit of a time-consuming process, but it works really well for these types of situations. 

4. Update Your PC

You should always install the latest Windows updates as soon as they become available because they install bug fixes to enhance performance and could fix your disk usage issue, too.

Follow these steps to update your Windows 10 PC:

1. Open the Settings app by pressing Windows + I on the keyboard.
2. Select Update & Security at the bottom.

1. Select Windows Update on the left.
2. Select the Check for updates button.

1. Wait for Windows to find newer updates and install the available updates.

Reboot your PC to make sure the newly installed updates work properly.

5. Disable Scheduled Disk Defragmentation

If Windows 10 shows 100% disk usage only at specific times, scheduled disk defragmentation could be the cause. This is because the defragment task runs automatically at scheduled times and uses a lot of disk space.

Turn the scheduled disk defragmentation off and see if that fixes your problem. 

You can always manually run a defragment task using the defrag utility.

1. Open the Start menu and search for Defragment and Optimize Drives. Select the first result.

1. Select the Change settings button on the Optimize Drives window.

1. Deselect the Run on a schedule (recommended) box, and select OK at the bottom.

In the future, if you need to defrag your disks, select the Optimize button in the above utility. This runs a manual defragmentation task.

6. Delete Temporary Files

Many Windows 10 features and installed apps create temporary files that don’t need to be preserved.You can clear your temporary files using the following steps to see if that fixes the 100% disk usage problem.

1. Press Windows + R on the keyboard to open the Run box.

1. Type %temp%  in Run and click OK to open the temporary folder.
   

1. Press Ctrl + A to select all files in the folder.

1. Right-click any one file and select Delete. This deletes all your temporary files.

1. Go to your desktop, right-click the Recycle Bin icon, and select Empty Recycle Bin.

1. Restart your PC.

This should, hopefully, fix the problem.  

7. Repair Corrupt Files

A corrupt system file can cause the disk usage to hit 100%. However, Windows 10 has a built-in tool to fix these files. You can follow the steps below to simply run the command to enable this tool. 

1. Access the Start menu, search for Command Prompt, and select Run as administrator on the right.

1. Select Yes in the User Account Control prompt.

1. Type sfc /scannow in the Command Prompt window, and press Enter:

1. Windows shows the live fix progress on your screen. 

Wait for the process to finish and if this doesn’t take care of the issue move on to the steps below.

8. Run a Security Scan

One possible reason your PC shows 100% disk usage is that your PC may be infected with a virus or malware. You can run Windows 10’s built-in antivirus program to find and remove any malicious files from your PC by following the steps below. 

1. Open the Start menu, search for Windows Security, and select the first result.

1. Select Virus & threat protection.

1. Next select Scan options.

1. Choose the Full scan option, and select Scan now at the bottom.

Wait for the antivirus program to find and remove viruses and malware from your computer, which will hopefully resolve the issue.

9. Modify Energy Options

Some users report that changing the energy plan can fix the 100% disk usage issue in Windows 10. 

1. Open the Start menu, search for Control Panel, and select the first result.

1. Change the View by setting in the top right corner to Category.

1. Select System and Security.

1. Select Power Options on the next screen.

1. Identify your currently selected power plan and click on the Change plan    settings next to it.

1. Select Change advanced power settings.

7. Click the dropdown menu at the top and cycle through the other options with a PC reboot between each selection.  For example, if this menu has Balanced as the current selection, change it to one of the other available options. Select Apply or OK at the bottom to save your changes. Reboot the PC.  

8. If this does not fix the problem, repeat Step 7 with the other available options.

You can always go back and select the original energy plan if this does not fix the problem and try the steps mentioned below next.

10. Change Google Chrome Options

If you use Google Chrome, there are options in this browser that can cause your disk usage to reach 100%. Turn these options off and see if this resolves your problem.

1. Launch Google Chrome on your PC.

1. Select the three vertical dots menu at the top-right corner. 

1. Select Settings.

1. Expand the Advanced menu on the left, and choose System from the expanded menu.

1. Turn off Continue running background apps when Google Chrome is closed on the right.

1. Select Privacy and security in the left sidebar, and choose Cookies and other site data on the right.

1. Scroll down and disable Preload pages for faster browsing and searching.

You can always re-enable the options if this does not fix the issue and move on to the next step mentioned below.

11. Turn Off Your Antivirus Program

If you’re running a third-party antivirus program, you want to make sure it’s not causing this issue by temporarily disabling it. 

Also, Windows 10 comes loaded with an antivirus called Microsoft Defender Antivirus that does a pretty great job of catching most malware and spyware, thus negating the need for a third-party program in the first place. 

12. Clean Install Windows 10

If none of the above methods work, your last resort is to clean install Windows 10 on your computer. This removes everything that your PC currently has, and installs a fresh version of the Windows 10 operating system.

Make sure you backup your important files before you do that, or you’ll end-up losing your files.

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