Seldom, you might find the message “An operating system wasn’t found. Try disconnecting any drives that don’t contain an operating system. Press Ctrl+Alt+Del to restart” while booting Windows System. How to fix the Operating system not found? Read the whole article to obtain the relevant answer to the question, how?

What causes the problem Operating system not found? There are multiple causes for the problem below-stated are some of the main causes:

  • Hard drive is not connected with the Operating System
  • Mislead in Power or ribbon cables connection
  • Corrupted boot configuration data
  • Missing or damaged master boot record
  • Damaged System partition

Steps to Fix “Operating system not found” problem in Windows System.

You must have a Windows installation media to follow the stated steps in Windows Operating System. In case, if you don’t have installation media or not aware of how to create it kindly, visit the official Microsoft Website to know the process for creating Windows installation media.

Operating system not found

  • Turn ON your Windows PC.
  • Insert the Windows installation media in your operating system.
  • Now, press the F8 key to find Boot Menu.

Operating system not found

  • Choose the inserted Windows installation media option (DVD or USB drive) and hit enter.

Operating system not found

  • Select the language, Time & Currency format, and Keyboard or Input method from the drop-down box and click on NEXT Tab.

Operating system not found

  • You will find the “Repair your computer” option on the left bottom side. Click on it.

Operating system not found

  • The next step is to click on the “Troubleshoot” option

Operating system not found

  • Click on “Advanced Option” to continue.

Operating system not found

  • The next step is to click on the “Startup Repair” option.
  • The process will consume some time, wait till it ends. Once done, try to boot your Windows Operating System.

In case, if you still find the same message “An operating system wasn’t found. Try disconnecting any drives that don’t contain an operating system. Press Ctrl+Alt+Del to restart” while booting Windows System kindly, follow the stated steps.

  • Turn Off/On Windows PC and press the F8 function key to find Boot Menu.
  • Select the Windows installation media (DVD or USB drive) from the menu and hit enter.

Operating system not found

  • Select Language, Time & Currency, and Keyboard method. Click on Next TAB.
  • Now, you have to press SHIFT + F10 Keys simultaneously to open a command prompt on Windows PC.

Operating system not found

  • Enter the command diskpart in Command Prompt and hit enter.

Operating system not found

  • Now, input the next command list disk and hit enter.

Operating system not found

  • Enter the command Select disk 0 and hit enter.

Operating system not found

  • The next step is to enter the command list volume and hit enter.

Operating system not found

  • Now, enter command select volume 3 and hit enter (Windows installation media)

Operating system not found

  • Enter the command active and hit enter.
  • Input the last command assign and hit enter. Once done, close the Command prompt.

Note: Follow the command order and hit enter after each command.

Diskpart (enter)

list disk (enter)

Select disk 0 (enter)

list volume (enter)

select volume 3 (enter) {It might differ, look for Ltr D select the same volume}

active (enter)

assign (enter)

Restart your Windows Operating System, Operating system not found problem will vanish.

FAQ for Operating system not found

  • What is Windows installation media?

Windows installation media is the source that helps you to upgrade or repair the Windows Operating System. In case, if you find the message an operating system wasn’t found booting your system, you have to rely on Windows installation media.

  • How do I find Windows installation media?

Visit the official Microsoft Website to find Windows installation media. You can create installation media for your Windows System. You must have a reliable internet connection, USB flash driver or DVD, and product key to create installation media.

  • What causes an operating system wasn’t found?

Below-stated are some of the main causes for the error message “An operating system wasn’t found. Try disconnecting any drives that don’t contain an operating system. Press Ctrl+Alt+Del to restart”

  1. The hard drive is not connected properly
  2. Mislead in power or ribbon cables
  3. Corrupted boot configuration
  4. Damaged system partition.

Conclusion

We’re glad to introduce the fixing methods for Operating system not found problem, in this article. If you have any doubts or queries kindly, note them in the comment section. We will look into it!

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