Hi,
Is there any output if you run "python --version" in PowerShell? Ensure the python paths are added to the environment variable $env:path.
Press Win+R and run "powershell.exe -noprofile" to start a new PowerShell and see if the issue persists.
Run $PSVersionTable to check the current PowerShell version. If it's Windows PowerShell 5.1, you can give a try to PowerShell 7.