Why would one possibly need to do that !
Its possible,open program files,(usually R.click C:,open)then R.click windows file,open,
in new window,view,arrange icons custom,set as needed.
If that is not an option.
Right click the Start button | Properties |
Customize button | Advanced tab | Check:
Enable Dragging and Dropping | OK | Apply | OK
Try this again
Right click the Start Menu | Sort by Name