How do I fix: 🔍 Why This Happens?

The primary reason for this error is that the boot order of the computer has not been set correctly. By setting the USB drive to boot before the hard drive, Windows is unable to find the necessary files on the hard drive, leading to the failure to start error.Another possible cause could be a proble

How do I fix: Boot in Repair Mode?

Step 1: Insert the Windows installation disc into the computer and restart it. Press F2 during boot to access the BIOS settings.Step 2: Set the USB drive as the first boot device and save the changes. Then, exit the BIOS settings and start the computer again.Step 3: Once the computer starts, navigat

Software⏱️ 3 min read📅 2026-06-11

How to Fix: "Windows failed to start" error while installing from USB

Windows failed to start error during installation from USB

Quick Answer: Try booting in Safe Mode or using a different USB port.

📋 Table of Contents

🔍 Why This Happens
🔧 Proven Troubleshooting Steps
✨ Wrapping Up

The 'Windows failed to start' error occurs when Windows is unable to boot from the USB drive, causing frustration for users attempting to install Windows 7. This issue affects individuals who have created a bootable USB drive using the Windows 7 USB/DVD download tool and are trying to install Windows 7.

This error can be particularly frustrating as it prevents users from completing their installation process, resulting in wasted time and effort.

🔍 Why This Happens

The primary reason for this error is that the boot order of the computer has not been set correctly. By setting the USB drive to boot before the hard drive, Windows is unable to find the necessary files on the hard drive, leading to the failure to start error.
Another possible cause could be a problem with the USB drive itself, such as corruption or incorrect formatting.

🔧 Proven Troubleshooting Steps

Boot in Safe Mode and Repair

Step 1: Insert the Windows installation disc into the computer and restart it. Press F2 during boot to access the BIOS settings.
Step 2: Set the USB drive as the first boot device and save the changes. Then, exit the BIOS settings and start the computer again.
Step 3: Once the computer starts, navigate to the recovery environment by pressing F11 or F12 (depending on the manufacturer). Select 'Troubleshoot' and then 'Advanced options'.

Boot in Repair Mode

Step 1: Insert the Windows installation disc into the computer and restart it. Press F2 during boot to access the BIOS settings.
Step 2: Set the USB drive as the first boot device and save the changes. Then, exit the BIOS settings and start the computer again.
Step 3: Once the computer starts, navigate to the recovery environment by pressing F11 or F12 (depending on the manufacturer). Select 'Troubleshoot' and then 'Advanced options'. Click 'Command Prompt' and type 'bcdboot.exe /fixboot /forcecommit'.

✨ Wrapping Up

To resolve the 'Windows failed to start' error, try booting in Safe Mode or Repair Mode. If the issue persists, it may be necessary to reformat the USB drive or seek further assistance from a Windows expert.

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