A: Yes. If you have a legitimate license, you can deactivate the old computer from within the software (Help > Deactivate) and then reuse the key on your new PC.
When you search for "Cisdem DVD Burner license key for free," the internet returns thousands of results. These come in three forms: Keygens, serial codes from "pastebin," or cracked .exe files.
: The most reliable way to get a valid key is to buy it directly from the Cisdem Official Website
Once you have a valid license key (purchased or legally given), activation takes 60 seconds: