基本Basic Input/Output System( BIOS ) 是最初的低级代码，可让您的 PC 在首次通电时正确启动。一些 PC 用户会熟悉在启动过程中按一个键以访问BIOS的说明，但 Windows 10 允许更简单的方法进入BIOS菜单。
如果您的 PC 使用较新的UEFI（统一可扩展固件接口(Unified Extensible Firmware Interface)）菜单作为BIOS替代品，则尤其如此。无需在 PC 首次启动时反复按键盘，您可以直接进入BIOS。以下是在Windows 10和更早的操作系统中进入BIOS的方法。(BIOS)
BIOS, UEFI BIOS, Legacy + UEFI: Which BIOS Do You Have?
较旧的 PC 只有一种负责 PC 启动的低级固件——BIOS。对于现代 PC，有两种类型的固件接口，以及您可能会遇到的第三种混合类型。
第一个是BIOS本身——原始的，有时也称为旧版BIOS，以将其与UEFI区分开来。它有一些限制，包括无法识别大小超过 2.1TB 的引导驱动器。Windows XP等较旧的操作系统将需要使用它。
这就是为什么现代 PC 已迁移到UEFI（或UEFI BIOS）作为旧的纯文本BIOS界面的替代品。它可以加快启动速度，将启动信息存储在驱动器上的特殊EFI分区上。它还支持更大的驱动器、更多的驱动器分区，并具有更好的鼠标支持菜单。
您可能还会在某些BIOS/UEFI菜单中看到 Legacy + UEFI（或Legacy/UEFI这可作为一种预先检查，确定您拥有的系统驱动器类型以及是使用UEFI还是使用旧版BIOS来启动您的 PC。
如果您不确定您的 PC 上使用的是UEFI还是旧版BIOS，请查找您的BIOS 版本(BIOS version)，查阅您的 PC 或主板的用户手册，或尝试以下步骤在Windows 10中进入BIOS并自行查找.
如何在 Windows 10 中进入 BIOS(How to Enter BIOS in Windows 10)
如果您正在运行Windows 10 ，则无需尝试通过在 PC 首次启动时快速点击键盘键来访问UEFI BIOS菜单，而是可以直接启动到它。仅当您的 PC 使用UEFI(UEFI)而不是旧版BIOS(BIOS—for)时，您才能执行此操作- 对于较旧的 PC 或Windows版本，请按照下一节中的说明进行操作。
- 要访问UEFI设置，您需要转到 Windows 10设置(Settings)菜单。右键单击(Right-click)“开始”菜单(Start menu)按钮并选择“设置”(Settings)来执行此操作。
- 在Windows 设置(Windows Settings)菜单中，单击更新和安全(Update & Security )>恢复(Recovery)。在“恢复(Recovery)”选项卡下，按“高级启动(Advanced startup)”部分下的“立即重启”(Restart Now)按钮。
- 这会将Windows 10引导到“高级启动(Advanced Startup)”菜单。从这里，选择疑难解答(Troubleshoot)选项。
- 在疑难解答(Troubleshoot)部分，按高级选项(Advanced options)。
- 在高级选项(Advanced options)菜单下，单击UEFI 固件设置(UEFI Firmware Settings )按钮。这将加载您的UEFI设置菜单。
如果您没有看到UEFI 固件设置(UEFI Firmware Settings)选项，您的 PC 可能使用的是旧版BIOS。正如我们所提到的，您只能对使用UEFI固件的较新 PC 执行这些步骤。
大多数运行Windows 10(Windows 10)的现代 PC 都会出现这种情况，但如果您使用的是具有旧版BIOS的旧 PC，则需要按照以下步骤操作。
如何在旧版本的 Windows 中进入 BIOS 或 UEFI 菜单(How to Enter BIOS or UEFI Menu in Older Versions of Windows)
虽然大多数现代 PC 上的传统BIOS已被UEFI取代，但一些用户可能仍在使用它。如果您尝试使用具有Windows 7或Windows XP等操作系统的旧 PC，则尤其如此。
不幸的是，没有使用 Windows 启动进入BIOS(BIOS)菜单的内置选项——您需要手动进行。
这就是事情变得棘手的地方。为此，您需要在首次打开 PC 时中断启动顺序。您通常通过按键盘上的某个键来执行此操作，但不同的制造商在此过程中使用不同的键。
如果显示您的BIOS(BIOS)说明，您通常可以在启动序列期间（非常短暂地）确定要按哪个键。如果它们不是，或者您无法及时发现它们，请查看您的 PC 或主板的用户手册以找到正确的按键。
您还可以尝试一些常用键，例如ESC、Delete、F1、F2、F10或F12。当您的 PC 启动时，您需要按此键（可能不止一次） - 如果您失败，请关闭您的 PC 并重试。
如果无法进入 BIOS 菜单怎么办(What to Do If You Can’t Enter the BIOS Menu)
一旦您知道如何在Windows 10中进入(Windows 10)BIOS ，这应该是一个简单的过程。但是，如果您仍然无法访问BIOS或UEFI BIOS菜单，您可能需要查看是什么阻止了您。
检查您的系统设置，如果您尝试访问旧版BIOS菜单，请尝试多次按键，直到找到可以使用的按键。如果您的 PC 带有旧版BIOS 密码(BIOS password)（或者您自己设置了一个）并且您不记得它，那么您需要先重置密码。
如果您需要访问UEFI BIOS并且无法启动到Windows，请中断Windows启动顺序大约 3 次。这将加载Windows故障排除菜单，您可以在其中使用上面列出的步骤 启动UEFI 。
如果一切都失败了，您最后的手段应该是将 BIOS 重置为默认设置(reset the BIOS to default settings)，这应该有助于您获得访问权限。
How to Enter BIOS in Windows 10 and Older Versions
Τhe Basic Input/Output Syѕtem (BIOS) is the initial low-lеvel code that allows your PC to start uр correctly when it’s first powеred up. Some PC userѕ will be familiar with the instruction to press a keу durіng bootup to acсess BIOS, but Windоws 10 allows for an easier method to enter the BIOS menu.
This is especially true if your PC is using the newer, UEFI (Unified Extensible Firmware Interface) menu as a BIOS replacement. Rather than pressing the keyboard repeatedly when your PC first starts up, you can enter BIOS directly. Here’s how to enter the BIOS in Windows 10 and older operating systems.
BIOS, UEFI BIOS, Legacy + UEFI: Which BIOS Do You Have?
Older PCs only had one type of low-level firmware responsible for PC start-ups—the BIOS. For modern PCs, there are two types of firmware interfaces, as well as a third, hybrid type that you may come across.
The first is the BIOS itself—the original, and sometimes referred to as the legacy BIOS to distinguish it from UEFI. It has some limitations, including the inability to recognize boot drives over 2.1TB in size. Older operating systems like Windows XP will need to use this.
That’s why modern PCs have moved to UEFI (or UEFI BIOS) as the replacement for the older, text-only BIOS interface. It allows for faster booting, storing your startup information on a special EFI partition on your drive. It also supports larger drives, more drive partitions, and has better menus with mouse support.
You may also see Legacy + UEFI (or Legacy/UEFI) mentioned in certain BIOS/UEFI menus. This acts as a pre-check that determines what type of system drive you have and whether to use UEFI or the older legacy BIOS to start up your PC.
If you’re unsure whether you’re using UEFI or legacy BIOS on your PC, look for your BIOS version, consult the user manual for your PC or motherboard, or try the steps below to enter BIOS in Windows 10 and find out for yourself.
How to Enter BIOS in Windows 10
Rather than attempt to access the UEFI BIOS menu by quickly tapping a keyboard key when your PC first boots, you can boot directly into it if you’re running Windows 10. You can only do this if your PC uses UEFI rather than the legacy BIOS—for older PCs or Windows versions, follow the instructions in the next section.
- To access the UEFI settings, you’ll need to go to your Windows 10 Settings menu. Right-click the Start menu button and select Settings to do this.
- In the Windows Settings menu, click Update & Security > Recovery. Under the Recovery tab, press the Restart Now button under the Advanced startup section.
- This will boot Windows 10 into the Advanced Startup menu. From here, select the Troubleshoot option.
- In the Troubleshoot section, press Advanced options.
- Under the Advanced options menu, click the UEFI Firmware Settings button. This will load your UEFI settings menu.
If you don’t see the option for UEFI Firmware Settings, your PC is probably using a legacy BIOS. As we’ve mentioned, you can only follow these steps for newer PCs using the UEFI firmware.
This is going to be the case for most modern PCs running Windows 10, but if you’re using an older PC with a legacy BIOS, you’ll need to follow the steps below.
How to Enter BIOS or UEFI Menu in Older Versions of Windows
While the legacy BIOS has been replaced by UEFI on most modern PCs, some users may still be using it. This is especially true if you’re trying to use an older PC with an operating system like Windows 7 or Windows XP.
Unfortunately, there isn’t a built-in option to boot into the BIOS menu using Windows—you’ll need to do it manually.
This is where things can get tricky. To do this, you’ll need to interrupt the boot-up sequence when your PC is first turned on. You usually do this by pressing a certain key on your keyboard, but different manufacturers use different keys for this process.
You can usually spot which key to press (very briefly) during the boot-up sequence if your BIOS instructions are shown. If they aren’t, or you can’t spot them in time, check the user manual for your PC or motherboard to find the right key to press.
You can also try some of the common keys, such as ESC, Delete, F1, F2, F10 or F12. You’ll need to press this key (potentially more than once) as your PC starts up—if you fail, turn your PC off and try again.
What to Do If You Can’t Enter the BIOS Menu
It should be a straightforward process once you know how to enter the BIOS in Windows 10. If you still can’t access the BIOS or UEFI BIOS menu, however, you may need to look at what’s stopping you.
Check your system settings, and if you’re trying to access a legacy BIOS menu, try multiple key presses until you find the one that works. If your PC came with a legacy BIOS password (or you set one yourself) and you can’t remember it, then you’ll need to reset the password first.
If you need to access a UEFI BIOS and you can’t boot into Windows, interrupt the Windows boot-up sequence about three times. This will load the Windows troubleshooting menu, where you can boot into UEFI using the steps listed above.
If all else fails, your last resort should be to reset the BIOS to default settings, which should help you gain access.
