Monday, December 5, 2022
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How to Fix Operating System Not Found on Windows Computer

Your computer or laptop suddenly error? even though it was running smoothly? Yes, computer or laptop errors are common or commonly experienced by Windows users.

The error can be caused by many things, for example due to problems with the OS, virus or malware problems, hard disk problems, and so on.

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One of the problems that Windows users usually experience is the error message “Operating system not found. Press Ctrl + Alt + Delete to restart”. Well, this error message usually appears and causes the computer to be unable to enter the Windows operating system, and is stuck there.

Error Operating system not found itself is a condition where the computer or laptop fails to retrieve the operating system on the hard disk. This, can be caused by faulty hardware, or problems in the BIOS can also trigger this problem.

How to Fix Operating System Not Found

The problem of operating system not found can be solved as long as there is no serious damage to the hardware. How to? You can solve this problem through the BIOS, through CMD, or it can be done by repairing the system. Well, to find out how to do it, please read this article to the end.

  • Check BIOS Settings
  • Repair Boot with CMD
  • Repair System
  • Clean Virus
  • Check Hard Disk Condition

Please read.


Check BIOS Settings

The Basic Input Output System or commonly known as the BIOS is a program written in assembly language that has the task of managing the functions of the hardware or hardware on your laptop or computer. Well, besides that the BIOS can also solve the Operating system not found, you know.

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There are two BIOS settings that you need to set here, namely the type of boot priority and boot. Both have their respective functions and of course can be used to solve the problem of operating system not found. Here are the steps to set boot priority and boot:


#1. Set Boot Priority

Boot Priority is a settings menu found in the BIOS and can set the hardware storage that will be prioritized and run first. For example, there are several hard drives on a laptop or computer and one of them contains the system and software.

So with Boot Priority you can prioritize the boot hard disk containing the system and software to be number 1. Here’s how to set Boot Priority:

  1. Restart your computer or laptop.
  2. Then enter the BIOS by repeatedly pressing F1/F2/DEL/F12 (check on the screen).
  3. Look for Boot settings.
Boot settings
Boot settings
  1. Set the boot priority setting (disk order) containing the system to the top.

#2. Set Boot to Legacy Boot

Sometimes the operating system not found problem is caused because some Windows cannot run normally in UEFI mode. Therefore, setting the setting to Legacy usually solves the problem. Here’s how to set boot to Legacy boot:

  1. First please restart your computer or laptop
  2. Then enter the BIOS by pressing F1/F2/DEL/F12 (check on the screen)
  3. Look for UEFI settings or similar
  4. Please change to Legacy
Set Boot to Legacy Boot
Set Boot to Legacy Boot
  1. Please save settings and  restart

Repair Boot with CMD

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CMD stands for Command Prompt. The term Command Prompt can be defined as a DOS command delivered in text form. With CMD, you can access your computer as you would access it through Windows explorer.

  1. Prepare Windows installation media (DVD or USB).
  2. Boot the installation media and select the Repair Your Computer option.
  3. Then, access Advance Options and open Command Prompt.
Repair Boot with CMD
Repair Boot with CMD
  1. Type the command bootrec /rebuildbcd then press Enter.
bootrec /rebuildbcd
bootrec /rebuildbcd
  1. Wait for the process until the Windows MBR is found.
  2. Type Y to add the MBR to the boot list.
  3. If so, please restart your computer or laptop.

Please read.

Repair System

The repair system found on your laptop or computer, has a role to perform recovery tools.. If your laptop or computer fails to boot, then by repairing you can repair and restore the problematic system to normal again.

  1. Please boot Windows installation media (DVD or USB).
  2. If you are already in the installation window, please select Language and then select Advanced Options.
  3. There will appear the Automatic Repair option, please select and run the option.
Automatic Repair
Automatic Repair
  1. Wait for the process, because repairing the system can be fast or slow.
  2. Done.

Clean Virus

The most common and frequent problem on a laptop or computer is being attacked by a dangerous virus. This results in laptop performance, lost or unreadable files, damaged hard disk and RAM, and others. Related problems operating system not found can also be caused by a virus.

Steps to clean the virus

  1. Download and install the virus cleaner application. Here we recommend using Malwarebytes. You can download here.
Download Malwarebytes Clean Malware
Download Malwarebytes Clean Malware
  1. After that, please install the virus cleaning application like installing applications in general.
  2. If so, please open the application.
  3. Then do a scan and wait until the list of detected viruses appears.
  4. Then you can quarantine or delete the virus immediately.
  5. Done.

Check Hard Disk Condition

The next step you can check the condition of the hard drive you are using. If you are using the hard drive as system storage, please check if there are problems or bad sectors on your hard drive.

You can check it only using software, for example using HDD Sentinel or HD Tune.

So what if it turns out that the hard drive is really damaged? We recommend that you replace the damaged hard drive with a new hard drive. Yes, although sometimes the old hard drive can still be repaired and used again. However, the reading speed of the hard drive will definitely slow down, making your computer or laptop slow.

Sometimes it’s easy and sometimes it’s not. But as long as there is no serious hardware damage, the error message operating system not found is likely to be fixed. To fix this, you can follow the steps that we have written. That’s all from us and thank you.

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Muhamad Nagib
Muhamad Nagib
Information technology writer who has great interest in Windows, MacOS and Linux-based computers as well as Android and iOS smart devices, therefore this website is dedicated to reviewing all information about these operating systems and devices. Learn more.


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