Assuming you have standard an English keyboard, the following commands should work. [Shift ~] = tilde (til) e.g. pães [`] = grave accent (crase) e.g. Sairei ás duas horas da tarde [‘ ](apostrophe) = acute (acento agudo) e.g. está [Shift ^] = circumflex (acento circunflexo) e.g. experiência [RightAlt c] = cedilla (cê cedilha) e.g. balanço Source: http://braziliangringo.com/brazilian-keyboard/ Please, let me know if it worked...

You can use a virtual keyboard like this one: http://portuguese.typeit.org/

In general you have to press shift and the button with the accent on the top before you type the letter, I don't know if you've did that. If so, there is a problem.

First the word "day" in Portuguese doesn't have accent, we write "dia". Probably you are confusing with the Spanish word "día" which have same meaning of "day". Secound you can get the accents in your keyboard if you change the language in the bar of pc. Did you try do it? In my pc I've different languages like German and if I press some letters in keyboard it will write not the letter draw of keyboard but the "special" letter in German I want.

You can follow this instructions to type accents directly: http://www.techtudo.com.br/dicas-e-tutoriais/noticia/2015/09/como-configurar-teclado-estrangeiro-de-notebook-para-usar-acentuacao.html