If you want to open, for example, to open the file is the root directory of the C disk 1.txt file, you can click on the "Start" button, point to "Run", type: notepad c:\1.txt (note that the notepad has a space after it) Enter. notepad after a space) Enter or point "OK" button, you can open it. Which "C:\1.txt" can be changed to the file path you need.