I purchased an Arduino educational kit with a Nano processor. For the longest time everything worked as it should and passed all sketch tests.
Then the Nano stopped working, not even running the blink sketch, with the Nano standing alone - not connected to any circuit. Nothing had changed, not the computer or Nano driver.
I purchased a new Nano processor from Arduino and the new board has never failed to work and run a sketch connected to the original PC and installed Nano driver.
The original Nano board sat for a long while, then I put USB power to it and it worked as it should for about a day, then failed again.
I know electronic components fail - my question for y'all: Why did the original Nano board fail, then work again for a short period of time before failing again.
Thanks for any help/advice you can offer.