: The official website provides a free demo that scans for bad sectors but requires a paid registration ($59.95 USD) to repair more than one sector.

Leo held his breath and restarted the machine. The Windows logo didn't flicker. The desktop loaded instantly. The "Click of Death" was replaced by the smooth, steady hum of a healthy drive. He spent the next three hours frantically dragging files onto an external drive, feeling like he’d just pulled a ghost back from the afterlife.

are available, version 1.71 remains a common find in "legacy" or "free bootable ISO" collections online. Key Features and Claims Surface Regeneration

You're looking for information on HDD Regenerator 1.71 Full Bootable ISO, and I found some insights for you.

You do not need to pirate HDD Regenerator. These free tools can handle most bad sector issues: