Solving the ‘Operating System Not Found’ Error on Windows 10: A Comprehensive Guide

When you encounter the ‘Operating System Not Found’ error on your Windows 10 system, it can be frustrating and alarming. This error typically indicates that Windows has encountered a critical system issue. However, by following this comprehensive guide, you can troubleshoot and resolve the problem efficiently.

Step 1: Check BIOS/UEFI Settings

The first step in troubleshooting the ‘Operating System Not Found’ error is to verify your system's BIOS/UEFI settings.

Step 1.1: Access BIOS/UEFI

Restart your computer.

Press the appropriate key (commonly F2, F10, DEL, or ESC) immediately after turning on the computer to enter the BIOS/UEFI settings.

Step 1.2: Check Boot Order

Ensure that your hard drive is set as the first boot device. If it is not, change the boot order to prioritize the hard drive.

Step 1.3: Adjust Secure Boot

Depending on your system configuration, enabling or disabling Secure Boot might help.

Step 2: Check Hardware Connections

If adjusting BIOS/UEFI settings does not resolve the issue, check the hardware connections to ensure that the hard drive is properly connected to the motherboard and power supply.

Step 2.1: Power Down Your Computer

Power down your computer and disconnect it from the power source.

For desktops, open the case and access the drive bay for laptops. Check and ensure that the hard drive is properly connected.

If possible, reseat the connectors for a secure connection.

Step 3: Use Windows Recovery Media

Creating a Windows 10 installation media can be another effective method to resolve the issue.

Step 3.1: Create a Windows 10 Installation Media

Download the Windows Media Creation Tool from the Microsoft website.

Follow the on-screen instructions to create a USB drive or DVD.

Step 4: Boot from the Recovery Media

Insert the USB drive or DVD into your computer and restart it.

Enter the BIOS/UEFI if necessary to set the USB drive or DVD as the first boot device.

Boot into the Windows 10 Recovery Environment.

Select your language preferences and click 'Next'.

Step 5: Run Repair Commands

The Windows Recovery Environment provides several useful tools, including command-line utilities, to repair the issue.

Step 5.1: Repair Commands

In the Command Prompt, run the following commands one by one:

bootrec /fixmbrbootrec /fixbootbootrec /scanosbootrec /rebuildbcd

Step 6: Check Disk for Errors

Running a disk check can help identify and fix file system errors that may be causing the issue.

Step 6.1: Check Disk Utility

In Command Prompt, type:

chkdsk C: /f /r

Replace C: with the appropriate drive letter if Windows is installed on a different partition.

Step 7: Restore the System

If none of the above steps work, you may need to restore your system.

Step 7.1: Restore System

Boot from the Windows Recovery Media again.

Follow the prompts to restore your system to a previous state.

Additional Considerations

If the problem persists, it may indicate a failing hard drive or other hardware issues. Consider running diagnostic tests or consulting a professional technician.

Data Recovery

If you need to recover data from a non-booting system, consider using a data recovery tool or connecting the hard drive to another working computer.

Following these steps should help you resolve the ‘Operating System Not Found’ error and get your Windows 10 system up and running smoothly.