If you bought your computer after 2010, there’s most likely no reason to throw it out. By just installing an up-to-date Linux operating system you can keep using it for years to come.
Installing an operating system may sound difficult, but you don’t have to do it alone. With any luck, there are people in your area ready to help!
Pra quem conseguir contribuir traduzindo o site, já seria de bastante ajuda. Dá pra ver mais aqui, mas até o momento eu só achei 1 lugar de instalação brasileiro no site.