I have an older Arduino (2018) that doesn't work on my new computer while it works on my old laptop. When I upload a sketch the pins don't work but it takes it. I have tried several programmers but it doesn't seem to matter. It is strange that when I upload the blink with the built-in LED it works. Can anyone help me?
What exactly do you mean by “don’t work”?
Please post the sketch.
[pre]It seems the pins are not working at all, I have an Arduino Uno. I'm sure it isn't broken because it works on an older version of the Arduino IDE.
You only answered 1/3 of my questions.
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