Windows 7 problems HELP PLEASE

[bubbles226]

Hello,
i need help with windows 7.
i changed a setting on my notebook and the windows has changed. i dont know how to get it back to windows 7 and need help asap please

 

[Saga Lout]

Hello,
i need help with windows 7.
i changed a setting on my notebook and the windows has changed. i dont know how to get it back to windows 7 and need help asap please

What has it changed to?