Hello
Thank you for posting in Q&A forum.
You can change the default operating system in your boot files by following these steps:
1. Access System Configuration:
• Press Win + R to open the Run dialog.
• Type msconfig and press Enter.
2. Modify Boot Settings:
• In the System Configuration window, go to the Boot tab.
• You will see a list of installed operating systems.
• Select the correct version of Windows you want to set as default.
• Click Set as default.
• Click Apply and then OK.
3. Restart Your Computer:
• Restart your computer to apply the changes.
I hope the information above is helpful.
If you have any questions or concerns, please feel free to let us know.
Best Regards,
Daisy Zhou
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