System Restore? Sounds strange.
Notepad? Sounds even stranger. That's a text editor, not a file copier.
I'd try the command prompt (copy or xcopy commands with wildcards) or Explorer if this doesn't work out.
I am trying to backup files on a drive that has crashed and is no longer visible in MY Computer. So I rebooted & went into System Restore, then typed notepad at a command line. Within the window I selected the bad drive letter. The system can see my folders and my files so I clicked Copy, then clicked Paste & pointed at an external hard drive. The busy symbol now shows. It was a lot of data.
But I don't see any file names appearing in the external hard drive letter. Is it not copying? Is it stuck trying to read files? Or is it just busy copying and will display them when done?