The ability to keep a "clean room" environment (no writes to the patient drive) combined with the WinPE boot feature makes it superior to free tools like Recuva or PhotoRec, which lack portable boot environments and modern video repair capabilities.
Download installer > Run installer > Install to C:\Program Files . This process writes hundreds of MBs to your C: drive, potentially destroying the very files you want to recover.
Download ZIP > Extract to USB > Run from E:\4DDiG . The damaged drive remains untouched until you initiate a read-only scan.