It looks like you are looking for an article on how to generate an unlock code for a netbook (likely a government-issued educational netbook, such as those from Conectar Igualdad in Argentina or Ceibal in Uruguay).

You cannot generate a code for this. You must reinstall the operating system using a USB drive. Boot pressing F12 or Esc immediately after turning on the netbook to bypass the locked HDD. The "Generator" Myth There is no working online generator that asks for your Serial Number and gives you a code for modern locks. Most websites claiming to generate codes are scams trying to get you to download malware or pay for a survey.

Many of these netbooks have locked BIOS or bootloader systems to prevent theft. Unlocking them without authorization may violate the terms of use of the educational program. This article is for educational purposes regarding legacy equipment that has been officially discarded or for which support has ended.