如果您已从旧版本（如Windows XP、Vista和Windows 7 ）升级到 Windows 10 ，您可能已经注意到在启动时按下的 F8 功能键进入安全模式(to enter Safe Mode)不再起作用。
F8 键在您的键盘上仍然可用，但它可以与其他组合键一起使用以执行某些功能，尤其是当您的触摸板或鼠标不工作而您需要使用键盘快捷键(use keyboard shortcuts)时。
在本指南中，我们将向您展示当您发现 F8 在Windows 10中不起作用时该怎么做，但首先，让我们看看为什么会发生这种情况。
为什么 F8 在 Windows 10 中不起作用？(Why Is F8 Not Working In Windows 10?)
安全模式是所有版本操作系统中的原生Windows功能，用于解决各种问题，例如驱动程序安装问题、启动到Windows的问题以及与恶意软件或病毒相关的问题等。
删除了 F8 启动菜单以缩短系统启动时间。这是因为Windows 10 的启动速度比以前的版本快得多，因此您将没有足够的时间在启动过程中按下 F8 键并进入安全模式。(Safe Mode)另外，它在启动过程中无法识别按键(can’t recognize the key press)，这会阻止您访问启动选项屏幕，您可以从中选择安全模式(Safe Mode)选项。
相反，微软(Microsoft)提供了一个新的高级启动(Advanced Boot) 选项(Options)菜单功能，让您可以访问安全模式(Mode)等故障排除选项。
您仍然可以通过按 F8 键访问安全模式(Safe Mode)功能，但您必须使用几个简单的步骤手动重新启用它，还有其他方法也可以让您进入安全模式(Safe Mode)，但它们并不那么简单.
修复 F8 在 Windows 10 中不起作用(Fix F8 Not Working In Windows 10)
1.手动重新启用F8键(1. Manually Re-enable F8 Key)
- 在搜索栏中键入CMD ，然后单击(CMD)以管理员身份运行。(Run as Administrator.)
- 在命令提示符(Command Prompt)中键入此命令：bcdedit /set {default} bootmenupolicy legacy 并按Enter ..
注意(Note)：BCD 或引导配置数据编辑(Boot Configuration Data Edit)命令是Windows中的本机工具，用于控制操作系统的启动方式。它还可以帮助您轻松地重新激活 F8 启动菜单。
- 重新启动您的 PC(Restart your PC)，并在启动时反复按键盘上的 F8 键，您将看到“高级启动选项(Advanced Boot Options)”菜单，您可以从中选择安全模式、带网络连接(Safe Mode, Safe Mode with Networking)的安全模式或带命令提示符(Safe Mode with Command Prompt)的安全模式。
要再次禁用 F8 键，请打开提升的命令提示符(Command Prompt)并键入以下命令：bcdedit /set {default} bootmenupolicy standard
2.从开始菜单进入安全模式(2. Enter Safe Mode From Start Menu)
- 单击开始(Start)并选择设置(Settings)。
- 接下来，单击“设置”菜单中的“更新和安全”。(Update & Security)
- 在左侧窗格中，单击恢复(Recovery)，然后单击立即重新启动(Restart now)。
- Windows 将自动重新启动并显示选择一个选项(Choose an Option)屏幕。单击疑难解答(Troubleshoot)。
- 单击高级选项(Advanced Options)。
- 接下来，单击启动设置(Startup Settings)。
- 在键盘上，按 F4 键或数字 4 键进入安全模式(Safe Mode)，或按相应的键进入带网络(Safe Mode with Networking)或命令提示符(with Command Prompt)的安全模式，具体取决于您要执行的操作。
注意(Note)：您也可以单击开始(Start)，右键单击电源(Power)按钮，然后在单击重新启动(Restart)时按住 Shift(Shift)键。这会自动重新启动Windows并打开选择一个选项(Choose an Option )屏幕，之后您可以继续执行访问安全模式(Safe Mode)的步骤。
3.通过系统配置启动安全模式(3. Start Safe Mode By System Configuration)
系统配置也称为msconfig ，是在对(msconfig)Windows启动过程进行故障排除时使用的系统实用程序。它可以禁用或重新启用在启动过程中运行的设备驱动程序和程序，以找出您遇到问题的原因。与需要您重复几个步骤才能进入安全模式(Safe Mode)的其他方法相比，它可以节省时间。
- 按Windows logo key+R打开“运行”(Run)对话框并键入msconfig。然后按Enter或单击OK。
- 单击Boot并标记(Boot )Safe Boot旁边的复选框。选择最小(Minimal)并单击确定(OK)。还有其他可用选项，例如备用外壳（带命令提示符的安全模式）、活动目录修复(Alternate Shell (Safe Mode with Command Prompt), Active Directory Repair)和网络（带网络支持的安全模式）(Network (Safe Mode with Networking support))，因此您可以选择您需要的选项。
- 单击Apply > OK 以使更改生效，Windows将以安全模式(Mode)重新启动。
要从系统配置(System Configuration)中退出安全模式(Safe Mode)，请再次打开引导选项窗口，取消选中(Boot)安全引导(Safe Boot,)旁边的框，然后单击确定。单击重新启动(Restart)以应用更改，然后正常重新启动计算机。
4、Windows无法正常启动时进入安全模式(4. Enter Safe Mode When Windows Can’t Boot Normally)
安全模式(Safe Mode)加载最少的程序和驱动程序。如果 Windows 无法正常启动，则进入安全模式(Safe Mode)不会有问题，因为您可以重新启动电脑两次，然后转到自动修复(Automatic Repair)屏幕，您可以从那里进入安全模式(Safe Mode)。
- 确保(Make)您的 PC 已关闭，然后按住电源(Power)按钮直到计算机关闭。重复此操作大约两到三次（以触发启动恢复机制），直到出现准备自动修复(Preparing Automatic Repair )屏幕。
- 如果您在第一次打开计算机时看到正在准备自动修复(Preparing Automatic Repair)屏幕，请跳到下一步，将出现诊断您的 PC(Diagnosing Your PC)屏幕。随后将出现Attempting repairs消息。
- Windows 将显示“自动修复无法修复您的 PC(Automatic Repair couldn’t repair your PC) ”消息，并在“启动修复(Startup Repair)”屏幕中为您提供“关闭(Shut down)”和“高级”选项。(Advanced options)单击高级选项(Advanced options)。
- 在选择一个选项(Choose an option)屏幕中单击疑难解答。(Troubleshoot)
- 接下来，单击高级选项(Advanced Options)。
- 单击启动设置(Startup Settings)。
- 您的 PC 将重新启动并在下一个屏幕上显示不同的启动选项。
- 按(Press)键盘上的 F4 键或数字 4 键进入安全模式(Safe Mode)。您还可以按相应的键进入带有命令提示符(Safe Mode with Command Prompt)或网络(with Networking)的安全模式，具体取决于您要执行的操作。
注意(Note)：如果您有Windows 10可启动USB驱动器或安装光盘，如果Windows无法加载，您可以使用它以安全模式启动您的 PC。(Safe Mode)使用可启动驱动器或安装光盘启动 PC，选择修复您的计算机(Repair your computer)，您将进入选择(Choose)一个选项屏幕，您可以从中执行上述步骤进入安全模式(Safe Mode)。
5. 无法登录桌面时以安全模式启动(5. Start In Safe Mode When You Can’t Login to Desktop)
如果您发现 Windows 10安全模式(Safe Mode)不起作用，这是您可以使用的另一种方法。如果您可以访问您的登录屏幕（欢迎或登录屏幕）但无法访问或登录(can’t access or login)Desktop ，(Desktop)请使用以下步骤以安全模式(Mode)重新启动您的计算机。
- 单击Windows 10登录(Login)屏幕右下方的电源。(Power)
- 按住键盘上的Shift键并选择重新启动(Restart)。您会看到请稍候(Please Wait)屏幕短暂出现，以及选择一个选项(Choose an Option)屏幕。单击疑难解答(Troubleshoot)。
- 单击高级(Advanced) 选项(Options)。
- 在“高级选项(Advanced Options)”屏幕中，单击“启动设置”(Startup Settings)。
- 在“启动设置”(Startup Settings)屏幕中，按与您要使用的安全模式(Safe Mode)选项对应的键。
更多引导到安全模式的方法(More Ways To Boot To Safe Mode)
当您发现 F8 在Windows 10(Windows 10)中不起作用时，我们希望您发现本指南有助于您启动进入安全模式(Safe Mode)。如果您知道可用于访问安全模式(Safe Mode)的其他方法，欢迎与我们分享。
F8 Not Working In Windows 10? 5 Things To Try
If you’ve upgraded to Windows 10 from older versions like Windowѕ XP, Vista and Windows 7, you may have noticed that thе F8 function key yоu pressed during startup to enter Safe Mode no longer works.
The F8 key is still available on your keyboard, but it works with other key combinations to perform certain functions, especially when your touchpad or mouse isn’t working and you need to use keyboard shortcuts instead.
In this guide, we’re going to show you what to do when you find F8 not working in Windows 10, but first, let’s look at why this happens.
Why Is F8 Not Working In Windows 10?
Safe Mode is a native Windows feature in all versions of the operating system, which is used to troubleshoot various problems such as driver installation issues, problems booting into Windows, and malware or virus-related issues among others.
The F8 boot menu was removed in order to improve system boot time. This is because Windows 10 boots much faster than previous versions, so you won’t have enough time to press the F8 key and enter Safe Mode during startup. Plus, it can’t recognize the key press during the boot process, which prevents access to the boot options screen from where you can select the Safe Mode option.
Instead, Microsoft provided a new Advanced Boot Options menu feature that lets you access troubleshooting options such as Safe Mode and others.
You can still access the Safe Mode feature by pressing the F8 key, but you have to re-enable it manually using a few simple steps, and there are other methods that can also get you into Safe Mode, but they’re not as straightforward.
Fix F8 Not Working In Windows 10
1. Manually Re-enable F8 Key
- Type CMD in the search bar and click Run as Administrator.
- Type this command in the Command Prompt: bcdedit /set {default} bootmenupolicy legacy and press Enter..
Note: BCD or Boot Configuration Data Edit command is a native tool in Windows that controls how the operating system starts. It also helps you easily re-activate the F8 boot menu.
- Restart your PC, and press the F8 key repeatedly on the keyboard while it starts up and you’ll see the Advanced Boot Options menu, from where you can select Safe Mode, Safe Mode with Networking, or Safe Mode with Command Prompt.
To disable the F8 key again, open the elevated Command Prompt and type this command: bcdedit /set {default} bootmenupolicy standard
2. Enter Safe Mode From Start Menu
- Click Start and select Settings.
- Next, click Update & Security in the Settings menu.
- On the left pane, click Recovery and then click Restart now.
- Windows will restart automatically and display the Choose an Option screen. Click Troubleshoot.
- Next, click Startup Settings.
- A screen will appear showing different startup options.
- On your keyboard, press the F4 key or number 4 key to enter Safe Mode, or the corresponding key to enter Safe Mode with Networking or with Command Prompt depending on what you want to do.
Note: You can also click Start, right-click the Power button, and hold down the Shift key when you click Restart. This automatically restarts Windows and brings up the Choose an Option screen, after which you can continue with the steps to access Safe Mode.
3. Start Safe Mode By System Configuration
System Configuration also known as msconfig, is a system utility used when troubleshooting the Windows startup process. It can disable or re-enable device drivers and programs that run during the boot process to figure out why the problem you’re experiencing occurred. It saves time compared to other methods that require you to repeat several steps just to enter Safe Mode.
- Press the Windows logo key+R to open the Run dialog box and type msconfig. Then press Enter or click OK.
- Click Boot and mark the checkbox next to Safe Boot. Select Minimal and click OK. There are other options available such as Alternate Shell (Safe Mode with Command Prompt), Active Directory Repair, and Network (Safe Mode with Networking support), so you can pick the one you need.
- Click Apply > OK for the changes to take effect and Windows will restart in Safe Mode.
To exit Safe Mode from System Configuration, open the Boot options window again, uncheck the box next to Safe Boot, and click OK. Click Restart to apply the changes, and restart your computer normally.
4. Enter Safe Mode When Windows Can’t Boot Normally
Safe Mode loads with a minimum set of programs and drivers. If Windows can’t start normally, you won’t have a problem entering Safe Mode, because you can restart the PC twice and go to the Automatic Repair screen from where you can enter Safe Mode.
- Make sure your PC is off and then press and hold down the Power button until the computer goes off. Repeat this about two or three times (to trigger the boot recovery mechanism) until the Preparing Automatic Repair screen appears.
- If you see the Preparing Automatic Repair screen when you power on the computer the first time, skip to the next step, and the Diagnosing Your PC screen will appear. This will be followed by the Attempting repairs message.
- Windows will show the Automatic Repair couldn’t repair your PC message and give you the Shut down and Advanced options in the Startup Repair screen. Click Advanced options.
- Click Troubleshoot in the Choose an option screen.
- Next, click Advanced Options.
- Your PC will restart and show different startup options on the next screen.
- Press the F4 key or number 4 key on your keyboard to enter Safe Mode. You can also press the corresponding key to enter Safe Mode with Command Prompt or with Networking depending on what you want to do.
Note: If you have a Windows 10 bootable USB drive or setup disc, you can use that to start your PC in Safe Mode if Windows can’t load. Boot the PC using the bootable drive or setup disc, select Repair your computer and you’ll get to the Choose an option screen from where you can take the steps above to enter Safe Mode.
5. Start In Safe Mode When You Can’t Login to Desktop
This is another method you can use if you find Windows 10 Safe Mode not working. If you can access your login screen (welcome or sign-in screen) but can’t access or login to Desktop, use these steps to restart your computer in Safe Mode.
- Click on Power at the bottom right side of the Windows 10 Login screen.
- Press and hold down the Shift key on your keyboard and select Restart. You’ll see the Please Wait screen appear briefly, and the Choose an Option screen. Click Troubleshoot.
- In the Advanced Options screen, click Startup Settings.
- In the Startup Settings screen, press the key(s) corresponding to the Safe Mode option you want to use.
More Ways To Boot To Safe Mode
We hope you found this guide useful in helping you boot into Safe Mode when you find F8 not working in Windows 10. If you know of other methods you can use to access Safe Mode, you’re welcome to share them with us.
