Hello,
Thank you for reaching out to the Microsoft Community and I'll be glad to assist you today.
First, please check if your PC is compatible and meets all the minimum system requirements for Windows 11 using the PC Health Check app.
https://aka.ms/GetPCHealthCheckApp
• Run the PC Health Check App.
• Click Install.
• Click Check Now on the screen.
If your PC meets Windows 11 Requirements, go to Settings > Update & Security > Check for Updates.
Download the Windows 11 update and install it.
If you do not see the Windows 11 Updates to install, you can use the Windows 11 Installation Assistant tool to upgrade your PC to Windows 11. All your files, apps and settings will be preserved during the upgrade. However, it is recommended to backup your personal files before installing Windows 11.
https://www.microsoft.com/en-us/software-downlo...
You can download the Windows 11 installation Assistant tool (1st link) from the link above.
Reference:
https://support.microsoft.com/en-us/windows/way...
I hope this information helps. If you have any questions, please let me know and I will be happy to help you further.
Best regards,
Gunasekar N