To resolve a method that Win7 system Notepad cannot open

1. Return to the desktop, right click on the desktop any TXT file, if not, you can right-click a new text document, and then select its properties, then select the last item's properties.

2. After entering the Properties window, switch to the General option, and then click the Change button below.

3. This will pop up the "open mode" of the Settings window, select it as a "notepad" method, there is also a "Always use the selected program to open this file" setting, check it out, and then click OK to confirm the exit on it.