After changing the computer or resetting the computer, you can transfer the original license to a new computer or use it on the same computer. The steps are as follows:

1. Log in to your ESET Home account to release your license number: 

https://esetshopify.version-2.hk/pages/remove_devices

2. Uninstall any non-ESET antivirus software on your new computer / Current Computer

3. Install your ESET product on your new computer and use the license to activate (no need to register the license again)