Performing a clean restart in Windows 11, also known as a clean boot, can help diagnose and troubleshoot software conflicts. To do this, type 'msconfig' in the Start menu search and select 'System Configuration'. In the Services tab, check 'Hide all Microsoft services' and then click 'Disable all' to turn off third-party services. Next, go to the Startup tab and open Task Manager to disable all startup items. After applying these changes, restart your computer. This state will start Windows with a minimal set of drivers and startup programs, making it easier to identify the cause of any issues.