6 Ways to Fix Operating System Not Found In Windows 2024


6 Ways to Fix Operating System Not Found In Windows – You must be surprised when you get the “Operating system not found” error. Here’s how to fix this unusual problem!

6 Ways to Fix Operating System Not Found In Windows 10 PC
6 Ways to Fix Operating System Not Found In Windows 10 PC

How to Fix Operating System Not Found In Windows 2024

Of all the errors, glitches, and problems that you may encounter while using Windows 10, only a few cause fear, and one of them is “Operating system not found”.

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Let’s see how to fix the Operating system not found error on Windows 10.

#1. Check BIOS

Check BIOS
Check BIOS

You need to check two things in the BIOS. First, you need to make sure your machine recognizes your hard drive. Second, you need to make sure the drive where you are installing Windows is listed as the preferred boot drive.

The way to enter the BIOS changes according to the manufacturer. Usually, you have to press  Escape,  Delete, or one of the Function keys. You will see a message on the screen telling you which is the correct key to enter the boot process.

The BIOS menu itself also varies between devices. Broadly speaking, you need to look for the Boot tab at the top of the screen. (You can only use the keyboard to navigate the BIOS menu.)

Inside the Boot tab, highlight  Hard Drive and press  Enter. Make sure  Hard Drive is listed above  USB Storage,  CD\DVD\BD-ROM,  Removable Devices, and  Network Boot. You can adjust the order using the +  and   buttons.

If everything in your BIOS menu looks fine, skip stepping three. If you don’t see the hard drive listed, go to step two.

#2. Reset BIOS

Reset BIOS
Reset BIOS

If your machine doesn’t recognize your hard drive, there are many possible causes. For non-tech-savvy users, the only easy solution is to try resetting the entire BIOS menu to its defaults.

At the bottom of the BIOS menu, you will see a button for  Setup Defaults or  Reset BIOS. On the admin’s computer, there is  F9, but it may be different from yours. Confirm your decision when prompted and restart your machine.

If the operating system is still not found, you can stop reading this article. Unless you know a lot about assembling computers, you should take your machine to a computer repair shop.

#3. Fix Boot Records

Windows relies on three records to boot your machine. They are the  Master Boot Record  (MBR),  DOS Boot Record  (DBR), and  Boot Configuration Database  (BCD).

If one of the three records is corrupted, there is a high chance that you will find the message “Operating system not found”.

Fortunately, fixing these records is not as complicated as you might think. You just need to have a Windows installation drive. Use  Microsoft’s Media Creation Tool for creating Windows 10 installation media.

When your tools are ready, you need to use them to boot your machine. Depending on your device, you may only need to press one key during the boot process, or you may have to change the boot order in the BIOS menu.

But eventually, you will see the Windows Settings screen. Enter your preferred language, keyboard, and time format, and click  Next. On the next screen, select  Repair your computer.

Next, navigate to  Troubleshoot > Advanced Options > Command Prompt. When the Command Prompt loads, type the following three commands. Press  Enter  after each:

  • bootrec.exe /fixmbr
  • bootrec.exe /fixboot
  • bootrec.exe /rebuildbcd

Each command may take a few minutes to complete. After all the process is done, restart your PC and see if it boots up successfully.

#4. Enable Or Disable UEFI Secure Boot

Enable Or Disable UEFI Secure Boot
Enable Or Disable UEFI Secure Boot

Almost every Windows machine ships with UEFI firmware and Secure Boot enabled. However, in some cases, this may not work. For example, if Windows is installed on the GUID Partition Table, it can only boot in UEFI mode. On the other hand, if Windows 10 is running on an MBR disk, it cannot boot in UEFI mode.

Therefore, it is a good idea to enable or disable UEFI Secure Boot and see if there is a difference. You make adjustments in the BIOS menu. Usually, the option is named  Secure Boot and can be found in the Authentication or Security tab.

#5. Enable Windows Partition

Enable Windows Partition
Enable Windows Partition

It is possible that the partition where Windows is installed has been disabled. You can fix it using the Windows native diskpart tool. To perform the following steps, you will once again need a Windows USB installation media.

Turn on your machine and boot from tools. As in the third step, you have to enter your language preferences, etc., click  Next, select  Repair your computer, and go to troubleshoot > Advanced Options > Command Prompt.

In the Command Prompt, type diskpart and press  Enter, then type list disk and press  Enter. You will see a list of all the disks attached to your machine. Write down the disk number you need. Usually, it’s the biggest.

Next, type select disk [number], replacing [number] with that number. Press  Enter.

Now type list volume and press  Enter. This will show you all the partitions on your selected disk. Specify which partition Windows is installed on and note the number, then type select volume [number], again replacing [number] with the number you just noted down.

Finally, type active and press  Enter. To see if the process was successful, restart your machine.

#6. Use Easy Recovery Essentials

Use Easy Recovery Essentials
Use Easy Recovery Essentials

Easy Recovery Essentials is a third-party application that specializes in fixing boot problems. If none of the previous five steps worked, it’s worth trying.

Apart from fixing the “Operating system not found” message, this can also resolve other common startup error messages.

Just download the app, burn the ISO to a CD, and use the CD to boot your machine. The application wizard guides you through the repair process.

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This is the explanation of 6 ways to fix the operating system Not Found In Windows. Hopefully from some of these methods, there is one that can fix it on your computer.

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Akshara Singh
I'm Akshara Singh, from Tamil Nadu (India) I have been Running this Blog since 2016 with my full effort to Help users in the Tech field and clear doubt, and provide advanced guides in simple methods.


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