修复操作系统未找到错误： (Fix Operating System Not Found Error: )当您启动Windows时，您会在黑屏上收到错误消息(error message)“未找到操作系统”(System)，然后您将遇到大麻烦，因为您将无法启动Windows。该错误本身指出，由于缺少操作系统或(operating system)Windows无法读取它，Windows无法启动。(Windows)那么(Well)，错误可能是由于硬件或软件问题(hardware or software issues)引起的。根据您的系统配置(system configuration)，您会收到以下任何错误消息(error message)在启动时：
找不到运作系统(Operating System Not Found)
An operating system wasn’t found. Try disconnecting any drives that don’t contain an operating system. Press Ctrl+Alt+Del to restart
缺少操作系统(Missing Operating System)
上述所有错误消息的含义相同，即找不到或缺少操作系统， (Operating system)Windows将无法启动。现在让我们看看发生此错误的主要原因是什么：
- BIOS 配置不正确
- BIOS 未检测到硬盘
- BCD 损坏或损坏
- 硬盘物理损坏
- 主引导记录(Master Boot Record)( MBR ) 已损坏或损坏
- 不兼容的分区被标记为活动
现在根据您的系统配置和环境(System configuration and environment)，上述任何原因都可能导致找不到操作系统(System)错误(Found error)。因此，不要浪费任何时间，让我们(time let)看看如何使用下面列出的故障排除步骤实际修复未找到(Found error)操作系统错误。(Fix Operating System)
[已解决] 找不到操作系统错误(Found Error)
方法 1：将 BIOS 配置重置为默认值(Method 1: Reset BIOS Configuration to Default)
1.关闭您的笔记本电脑，然后打开它，同时按 F2、DEL 或 F12( press F2, DEL or F12)（取决于您的制造商）进入BIOS 设置。( BIOS setup.)
2.现在你需要找到reset选项(reset option)来加载默认配置(load the default configuration)，它可能被命名为Reset to default、Load factory defaults、Clear BIOS settings、Load setup defaults或类似的东西。
3.用箭头键选择它，按Enter，然后确认操作。您的BIOS现在将使用其默认设置。(default settings.)
4.再次尝试登录您的系统，看看您是否能够 修复操作系统未找到错误。(Fix Operating System Not Found Error.)
方法二： (Method 2: )设置正确的启动盘优先级(Set Correct Boot Disk Priority)
您可能会看到错误“操作系统未找到错误(Operating System Not Found Error)”，因为未正确设置引导顺序(boot order)，这意味着计算机正在尝试从没有操作系统(operating system)的另一个源引导，因此无法这样做。为了解决这个问题，您需要将硬盘设置为(Hard Disk)引导顺序(Boot order)中的最高优先级。让我们看看如何设置正确的启动顺序(boot order)：
1.当您的计算机启动时（在启动屏幕(boot screen)或错误屏幕(error screen)之前），反复按Delete 或 F1(Delete or F1)或F2 键(F2 key)（取决于您的计算机制造商）进入 BIOS 设置(enter BIOS setup)。
2.进入BIOS 设置(BIOS setup)后，从选项列表中选择Boot 选项卡。(Boot tab)
3.现在确保将计算机硬盘或SSD(Hard disk or SSD)设置为引导顺序(Boot order)中的最高优先级。如果没有，则使用向上或向下箭头键将硬盘设置在顶部，这意味着计算机将首先从它启动，而不是从任何其他源启动。
4.最后，按F10保存此更改并退出(change and exit)。这必须有Fix Operating System Not Found Error，如果没有则继续。
方法 3：运行硬盘诊断测试(Method 3: Run Hard Disk Diagnostic Test)
如果您仍然无法修复操作系统未找到错误(Fix Operating System Not Found Error)，那么您的硬盘可能出现故障。在这种情况下，您需要将之前的HDD 或 SSD(HDD or SSD)更换为新的并重新安装Windows。但在得出任何结论之前，您必须运行诊断工具来检查您是否真的需要更换硬盘(Hard Disk)。
要运行Diagnostics重新启动您的 PC 并在计算机启动时（在启动屏幕(boot screen)之前），按F12 键(F12 key)，当Boot 菜单(Boot menu)出现时，突出显示Boot to Utility Partition 选项(Utility Partition option)或Diagnostics 选项，然后按 Enter(option and press enter)键启动Diagnostics。这将自动检查系统的所有硬件，并在发现任何问题时进行报告。
Method 4: 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。(Click Repair)
4.在选择一个选项屏幕上(option screen)，单击疑难解答(Troubleshoot)。
5.在疑难解答屏幕上，单击高级选项(Advanced option)。
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. 等待Windows Automatic/Startup Repairs完成。
8.重新启动，您已成功 修复操作系统未找到错误。( Fix Operating System Not Found Error.)
另外，请阅读 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 5：修复或重建 BCD(Method 5: Repair or Rebuild the BCD)
1.使用上述方法使用Windows安装(Windows installation)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：
a) bootrec.exe /FixMbr
b) bootrec.exe /FixBoot
c) 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。
5.此方法似乎可以 修复操作系统未找到错误(Fix Operating System Not Found Error) ，但如果它对您不起作用(t work)，请继续。
方法 6：将正确的分区设置为活动的(Method 6: Set the Correct Partition as Active)
1.再次转到命令提示符并键入(Command Prompt and type)：diskpart
2.现在在Diskpart(Diskpart)中输入这些命令：（不要输入DISKPART）
DISKPART> select disk 1
DISKPART> select partition 1
DISKPART> active
DISKPART> exit
注意：(Note:) 始终将系统保留分区(System Reserved Partition)（通常为 100mb）标记为活动分区，如果您没有系统保留分区(System Reserved Partition)，则将 C：驱动器标记为活动分区。
3.重新启动以应用更改并查看该方法是否有效。
方法 7：修复安装 Windows 10(Method 7: Repair Install Windows 10)
如果上述解决方案都不适合您，那么您可以确定您的硬盘没有问题，但您可能会看到错误“操作系统未找到错误”，因为硬盘上的操作系统(operating system)或BCD 信息以某种方式被删除了。(BCD information)好吧(Well)，在这种情况下，您可以尝试修复(Repair)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(Windows)Windows的新副本（全新安装(Clean Install)）。
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就是这样，您已成功修复操作系统未找到错误(Fix Operating System Not Found Error)，但如果您对这篇文章仍有任何疑问，请随时在评论部分提出。
[SOLVED] Operating System Not Found Error
Fix Operating System Not Found Error: When you Start your Windows then out of nowhere you receive an error message “Operating System Not Found” on the black screen then you are in big trouble as you won’t be able to boot into Windows. The error itself states that somehow Windows is not able to boot because the operating system is missing or Windows is not able to read it. Well, the error could be caused because of both hardware or software issues. Depending upon your system configuration you receive any of the following error message on Startup:
Operating System Not Found
An operating system wasn’t found. Try disconnecting any drives that don’t contain an operating system. Press Ctrl+Alt+Del to restart
Missing Operating System
All of the above error messages mean the same thing that Operating system is not found or missing and Windows won’t be able to boot. Now let’s see what are the main causes because of which this error occurs:
- Incorrect BIOS configuration
- BIOS does not detect the hard disk
- BCD is corrupted or damaged
- Hard Disk is damaged physically
- Master Boot Record (MBR) is damaged or corrupted
- An incompatible partition is marked as Active
Now depending upon your System configuration and environment any of the above reason can cause the Operating System Not Found error. So without wasting any time let’s see how to actually Fix Operating System Not Found error with the below-listed troubleshooting steps.
[SOLVED] Operating System Not Found Error
Method 1: Reset BIOS Configuration to Default
1.Turn off your laptop, then turn it on and simultaneously press F2, DEL or F12 (depending on your manufacturer) to enter into BIOS setup.
2.Now you’ll need to find the reset option to load the default configuration and it may be named as Reset to default, Load factory defaults, Clear BIOS settings, Load setup defaults, or something similar.
3.Select it with your arrow keys, press Enter, and confirm the operation. Your BIOS will now use its default settings.
4.Again try to log in to your System and see if you are able to Fix Operating System Not Found Error.
Method 2: Set Correct Boot Disk Priority
You may be seeing the error “Operating System Not Found Error” because the boot order was not properly set, which means that computer is trying to boot from another source which doesn’t have an operating system thus failing to do so. In order to fix this issue, you need to set the Hard Disk as the top priority in the Boot order. Let’s see how to set proper boot order:
1.When your computer starts (Before the boot screen or the error screen), repeatedly press Delete or F1 or F2 key (Depending upon your computer’s manufacturer) to enter BIOS setup.
2.Once you are in BIOS setup select Boot tab from the list of options.
3.Now make sure that the computer Hard disk or SSD is set as a top priority in the Boot order. If not then use up or down arrow keys to set hard disk at the top which means the computer will first boot from it rather than any other source.
4.Finally, press F10 to save this change and exit. This must have Fix Operating System Not Found Error, if not then continue.
Method 3: Run Hard Disk Diagnostic Test
If you are still not able to Fix Operating System Not Found Error then chances are your hard disk might be failing. In this case, you need to replace your previous HDD or SSD with a new one and install Windows again. But before running to any conclusion, you must run a Diagnostic tool to check if you really need to replace the Hard Disk or not.
To run Diagnostics restart your PC and as the computer starts (before the boot screen), press F12 key and when the Boot menu appears, highlight the Boot to Utility Partition option or the Diagnostics option and press enter to start the Diagnostics. This will automatically check all the hardware of your system and will report back if any issue is found.
Method 4: 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 Advanced option.
6.On the Advanced options screen, click Automatic Repair or Startup Repair.
7.Wait til the Windows Automatic/Startup Repairs complete.
8.Restart and you have successfully Fix Operating System Not Found Error.
Also, read How to fix Automatic Repair couldn’t repair your PC.
Method 5: Repair or Rebuild the BCD
1.Using above method open command prompt using Windows installation disk.
2.Now type the following commands one by one and hit enter after each one:
a) bootrec.exe /FixMbr
b) bootrec.exe /FixBoot
c) 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.
5.This method seems to Fix Operating System Not Found Error but if it doesn’t work for you then continue.
Method 6: Set the Correct Partition as Active
1.Again go to Command Prompt and type: diskpart
2.Now type these commands in Diskpart: (don’t type DISKPART)
DISKPART> select disk 1
DISKPART> select partition 1
DISKPART> active
DISKPART> exit
Note: Always mark the System Reserved Partition (generally 100mb) active and if you don’t have a System Reserved Partition then mark C: Drive as the active partition.
3.Restart to apply changes and see if the method worked.
Method 7: Repair Install Windows 10
If none of the above solutions work for you then you can be sure that your hard disk is fine but you may be seeing the error “Operating System Not Found Error” because the operating system or the BCD information on the hard disk 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).
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That’s it you have successfully Fix Operating System Not Found Error but if you still have any questions regarding this post then feel free to ask them in the comment’s section.
