I'm sorry about the issue. Do you mean Windows 10 (not 11)?
When did you install Windows 10?
Please reply at the box below. Thank you,
You have 30 days from the day you installed Windows 10 for going back to Windows 7. Please click on Start (which is the windows logo / icon located at the bottom left of the computer's screen), then click on Settings. Then click on Update & security. Then click on Recovery. Then there, you can select the option to go back to your previous Windows version, and continue.
Please reply at the box below to continue. Thank you.