Autohotkey
From Attie's Wiki
Fix Explorer 'up' backspace button
#IfWinActive, ahk_class CabinetWClass Backspace:: ControlGet renamestatus,Visible,,Edit1,A ControlGetFocus focussed, A if(renamestatus!=1&&(focussed="DirectUIHWND3"||focussed=SysTreeView321)) { SendInput {Alt Down}{Up}{Alt Up} }else{ Send {Backspace} } #IfWinActive