`PS C:\>sdfsdfsdf`| _[Enter]_ `Command 'sdfsdfsdf' cannot be found.` _< - red colored error_ `PS C:\>sdfsdfsdf^C` _[Ctrl+C]_ `PS C:\> 'sdfsdfsdf' cannot be found.` _"ghost" of previous error_ `PS C:\> dir` _Normal command input_ `Command 'sdfsdfsdf' cannot be found.` _<- white colored 'error' displayed_ `Directory: C:\` `[...]` `PS C:\>`| this state can be cleaned if make other error(pressing enter on invalid input) and correct it afterwards