How to autocomplete filename in your path on the command line when in a different directory in windows7
From a CMD prompt or the run box, type "powershell" to give you what you're wanting.
Please use this command
cmd /f
which activates autofill.
Then type in atleast one letter of the file (or) folder name,
Then use Ctrl+F to autofill , if there more than one file (or) folder name which starts with the same letter,Then use Ctrl+F to cycle through the list.
Another choice is to drag and drop the file to cmd window, to get the entire path of the field.