: The most significant danger of these "free license key" sites is the high probability of malware. Cracks, keygens, and executable files from unverified sources are common vectors for viruses, trojans, and ransomware.
If you have a physical dongle (USB key), ensure it is plugged in during the activation process. Top Free Alternatives to Recover My Files v5.2.1 free license key recover my files v521 work
Did the loss happen from or a formatted drive ? : The most significant danger of these "free
If your hard drive is failing (clicking noises, not detected in BIOS), power off immediately. No software will fix hardware damage. Contact a professional lab. If it's just a simple deletion, go get Recuva. It's free, it works, and it won't ruin your life. not detected in BIOS)