修复无可用引导设备错误 Windows 10：(Fix No Boot Device Available Error Windows 10:)顾名思义，此错误是关于System not able to load Operating System。这个问题在Windows 10(Windows 10)中很常见，用户卡在启动屏幕上并显示此错误“没有可用的启动设备(Boot Device Available)”但不用担心，今天我们将确切了解如何解决这些问题以及如何修复没有启动设备Windows 中的可用错误。(fix No Boot Device Available Error in Windows.)
Windows无法启动，因为有时它找不到作为您的硬盘的启动设备，或者有时没有标记为活动的分区。这两个是最常见的原因，可以很容易地解决，但我们不会将我们的方法限制在这两个上，因为这对没有上述问题的所有其他用户不公平。相反，我们扩大了研究范围，以找到解决此错误的所有可能方法。
根据您的操作系统或系统，这些是您在处理此错误时可能会遇到的消息：
- (Boot Device)未找到(Found)引导设备。请(Please)在您的硬盘上安装操作系统...
- 未找到引导设备(Boot Device Found)。按(Press)任意键重启机器
- 没有可启动设备 - 插入启动盘并按任意键
- 没有可用的引导设备
为什么找不到引导设备？(Why is Boot Device Not Found?)
- 系统启动的硬盘损坏
- BOOTMGR 丢失或损坏
- MBR 或引导扇区损坏
-
NTLDR丢失或损坏
- 引导顺序设置不正确
- 系统文件损坏
- Ntdetect.com 丢失
- Ntoskrnl.exe 丢失
- NTFS.SYS 丢失
- Hal.dll 丢失
(Fix No Boot Device Available Error)Windows 7/8/10中没有可用的引导设备错误
Important Disclaimer:
方法一：Run Startup/Automatic Repair
1. 插入Windows 10可启动安装DVD并重新启动您的 PC。
2. 当提示Press any key to boot from CD or DVD时，按任意键继续。
3. 选择您的语言首选项，然后单击下一步(Next)。单击左下角的修复计算机。(Repair)
4. 在选择选项屏幕上，单击疑难解答。(Troubleshoot.)
5. 在疑难解答(Troubleshoot)屏幕上，单击高级(Advanced)选项。
6. 在高级(Advanced)选项屏幕上，单击自动修复或启动修复。(Automatic Repair or Startup Repair.)
7.等到(Wait)Windows 自动/启动Windows Automatic/Startup Repairs完成。
8.重新启动(Restart)，您可能能够成功修复No Boot Device Available Error，( fix No Boot Device Available Error,) 如果没有，请继续。
另请阅读：(Also Read:) 如何修复自动修复无法修复您的 PC。(How to fix Automatic Repair couldn’t repair your PC.)
方法 2：启用 UEFI 引导
注意：(Note:)这仅适用于GPT磁盘，因为它应该使用EFI 系统分区(EFI System Partition)。请记住，Windows 只能在 UEFI 模式下启动 GPT 磁盘。( Windows can only boot GPT disks in UEFI mode. )如果您有MBR磁盘分区，则跳过此步骤并按照方法 6(Method 6)进行操作。
1. 重新启动您的 PC，然后根据您的 PC点按 F2 或DEL以打开(DEL)Boot Setup。
2.进行以下更改：
Change Boot list option to UEFI
Disable Load Legacy option ROM
Enable Secure boot
3. 接下来，点击F10 以保存并退出( F10 to Save and Exit)启动设置。
方法 3：在BIOS设置中更改引导顺序(Boot Order)
1. 重新启动您的 PC，然后按 F2 或DEL进入BIOS设置。
2. 然后单击BIOS 实用程序设置下的启动。(Boot)
3. 现在检查启动顺序是否正确。
4. 如果不正确，请使用“上下箭头”将正确的硬盘设置为引导设备。
5. 最后，按F10 保存更改(F10 to save changes)并退出。这可能会修复 Windows 10 中的 No Boot Device Available 错误(fix No Boot Device Available Error in Windows 10)，如果没有，则继续。
方法 4：运行 CHKDSK 和 SFC
1.再次(Again)使用方法 1 转到命令提示符，只需单击“高级(Advanced)选项”屏幕上的“命令提示符(Command Prompt)”选项。
2. 在 cmd 中输入以下命令并在每个命令后按回车键：
sfc /scannow
chkdsk c: /r
注意：(Note:) 确保(Make)使用当前安装Windows的驱动器号(Windows)
3. 退出命令提示符并重新启动 PC。
方法 5：修复引导扇区
1. 使用上述方法使用Windows安装盘打开命令提示符。( Command Prompt)
2.现在一一键入以下命令，并在每个命令后按回车键：
bootrec.exe /FixMbr
bootrec.exe /FixBoot
bootrec.exe /RebuildBcd
3.如果上述命令失败，则在cmd中输入以下命令：
bcdedit /export C:\BCD_Backup
c:
cd boot
attrib bcd -s -h -r
ren c:\boot\bcd bcd.old
bootrec /RebuildBcd
4. 最后，退出 cmd 并重新启动Windows。
方法 6：更改Windows中的活动分区(Active Partition)
1. 再次 使用 Windows 安装盘打开命令提示符。(Command Prompt)
2. 在 cmd 中输入以下命令并在每个命令后按回车键：
DiskPart
list disk
select disk 0
list partition
select partition 1
active
exit
3. 关闭命令提示符并重新启动您的 PC。在许多情况下，此方法能够修复 No Boot Device Available 错误。(fix No Boot Device Available Error.)
方法 7：修复 Windows 映像
1. 打开命令提示符(Command Prompt)并输入以下命令：
DISM /Online /Cleanup-Image /RestoreHealth
2.按回车键运行上述命令并等待该过程完成，通常需要15-20分钟。
注意：(NOTE:) 如果上述命令不起作用，请尝试以下操作：
Dism /Image:C:\offline /Cleanup-Image /RestoreHealth /Source:c:\test\mount\windows
Dism /Online /Cleanup-Image /RestoreHealth /Source:c:\test\mount\windows /LimitAccess
3.该过程完成后重新启动您的PC。
方法8：修复安装Windows 10
如果上述解决方案都不适合您，那么您可以确定您的HDD是好的，但您可能会看到错误“No Boot Device Available Error”，因为操作系统或HDD上的(HDD)BCD信息以某种方式被擦除。好吧(Well)，在这种情况下，您可以尝试修复安装 Windows ，但如果这也失败了，那么剩下的唯一解决方案就是安装(Repair install Windows)Windows的新副本（全新安装(Clean Install)）。
就是这样，您已经成功修复了 Windows 10 没有可用的启动设备错误(Fix No Boot Device Available Error Windows 10)，但如果您对这篇文章仍有任何疑问，请随时在评论部分询问他们。
SOLVED: No Boot Device Available Error in Windows 7/8/10
Fix No Boot Device Available Error Windows 10: As the name itself suggest that this error is about System not being able to load Operating System. This issue is quite common in Windows 10 where the users are stuck on the boot screen with this error “No Boot Device Available” but don’t worry today we are going to see exactly how to tackle such issues and how to fix No Boot Device Available Error in Windows.
The Windows can’t boot because sometimes it can’t find the boot device which is your Hard disk or sometimes there is no partition marked as active. These two are the most common causes and can be easily fixed, but we are not limiting our methods to these two as that won’t be fair to all the other users who don’t have the above issues. Instead, we have broadened our research in order to find all the possible fix for this error.
Depending upon your operating system or system these are the message you might encounter when dealing with this error:
- Boot Device Not Found. Please install an operating system on your hard disk…
- No Boot Device Found. Press any key to reboot the machine
- No bootable device – insert boot disk and press any key
- No Boot Device is Available
Why is Boot Device Not Found?
- The hard disk from which your system boot is corrupted
- BOOTMGR is missing or corrupted
- MBR or boot sector is damaged
-
NTLDR is missing or corrupted
- The boot order is not set correctly
- System files are damaged
- Ntdetect.com is missing
- Ntoskrnl.exe is missing
- NTFS.SYS is missing
- Hal.dll is missing
Fix No Boot Device Available Error in Windows 7/8/10
Important Disclaimer:
Method 1: Run Startup/Automatic Repair
1. Insert the Windows 10 bootable installation DVD and restart your PC.
2. When prompted to Press any key to boot from CD or DVD, press any key to continue.
3. Select your language preferences, and click Next. Click Repair your computer in the bottom-left.
4. On choose an option screen, click Troubleshoot.
5. On Troubleshoot screen, click on Advanced option.
6. On the Advanced options screen, click Automatic Repair or Startup Repair.
7. Wait till the Windows Automatic/Startup Repairs complete.
8. Restart and you may be able to successfully fix No Boot Device Available Error, if not, continue.
Also Read: How to fix Automatic Repair couldn’t repair your PC.
Method 2: Enable UEFI Boot
Note: This only applies to GPT disk, as it should be using an EFI System Partition. And remember, Windows can only boot GPT disks in UEFI mode. If you have an MBR disk partition, then skip this step and instead follow the Method 6.
1. Restart your PC and tap F2 or DEL depending upon your PC to open Boot Setup.
2. The make the following changes:
Change Boot list option to UEFI
Disable Load Legacy option ROM
Enable Secure boot
3. Next, tap F10 to Save and Exit the boot setup.
Method 3: Change the Boot Order in BIOS setup
1. Restart your PC and tap F2 or DEL to enter into BIOS setup.
2. Then click on Boot under BIOS utility setup.
3. Now check whether the boot order is correct or not.
4. If it’s not correct then use “up & down arrows” to set the correct hard disk as the boot device.
5. Finally, press F10 to save changes and exit. This might fix No Boot Device Available Error in Windows 10, if not then continue.
Method 4: Run CHKDSK and SFC
1. Again go to command prompt using the method 1, just click on the Command Prompt option on the Advanced options screen.
2. Type the following command in cmd and hit enter after each one:
sfc /scannow
chkdsk c: /r
Note: Make sure you use the drive letter where Windows is currently installed
3. Exit the command prompt and restart your PC.
Method 5: Repair your Boot sector
1. Using the above method open Command Prompt using the Windows installation disk.
2. Now type the following commands one by one and hit enter after each one:
bootrec.exe /FixMbr
bootrec.exe /FixBoot
bootrec.exe /RebuildBcd
3. If the above command fails then enter the following commands in cmd:
bcdedit /export C:\BCD_Backup
c:
cd boot
attrib bcd -s -h -r
ren c:\boot\bcd bcd.old
bootrec /RebuildBcd
4. Finally, exit the cmd and restart your Windows.
Method 6: Change the Active Partition in Windows
1. Again open Command Prompt using Windows installation disk.
2. Type the following command into cmd and hit enter after each one:
DiskPart
list disk
select disk 0
list partition
select partition 1
active
exit
3. Close the command prompt and restart your PC. In many cases, this method was able to fix No Boot Device Available Error.
Method 7: Repair Windows Image
1. Open Command Prompt and enter the following command:
DISM /Online /Cleanup-Image /RestoreHealth
2. Press enter to run the above command and wait for the process to complete, usually, it takes 15-20 minutes.
NOTE: If the above command doesn’t work then try on the below:
Dism /Image:C:\offline /Cleanup-Image /RestoreHealth /Source:c:\test\mount\windows
Dism /Online /Cleanup-Image /RestoreHealth /Source:c:\test\mount\windows /LimitAccess
3. After the process is completed restart your PC.
Method 8: Repair Install Windows 10
If none of the above solution work for you then you can be sure that your HDD is fine but you may be seeing the error “No Boot Device Available Error” because the operating system or the BCD information on the HDD was somehow erased. Well, in this case, you can try to Repair install Windows but if this also fails then the only solution left is to install a new copy of Windows (Clean Install).
That’s it you have successfully Fix No Boot Device Available Error Windows 10 but if you still have any queries regarding this post feel free to ask them in the comment’s section.
