Arduino NANO stops working after some time

Im having problem with older Arduino NANO that i have used in my basic computer. They use old boot loader. One Arduino is working perfectly fine, but second one wont boot up, just built in led starts flashing. No mater what i do, reset it or try working with it, just LED flashes...To fix it i have to upload program again. Can someone help me please...

Note: i cant upload with normal boot loader.

Take your second Arduino as a bootloader burner and burn the bootloader in your Arduino nano.

You can see the procedure here -

https://www.google.com/amp/s/sysexit.wordpress.com/2013/02/07/burning-a-bootloader-to-an-arduino-nano-using-another-arduino/amp/?espv=1

Sorry if that link isn't a hyperlink, because I am having some problems with my PC and I am sending this comment on my phone.

If any error occurs while burning the bootloader, just double check all the connections and then try to burn the bootloader. If you are a beginner, you must think that burning a bootloader might risk your Arduino as the work looks so dangerous, but it is not that risky, it just saves a bootloader on your Arduino.

I think that might fix your problem. : )

..Arnav

Hmmm.... Is bit too risky for me but thank you i will do it!

S.O.S. i get this

Arduino: 1.8.12 (Windows Store 1.8.33.0) (Windows 10), Board: "Arduino Uno"

avrdude: Expected signature for ATmega328P is 1E 95 0F
Double check chip, or use -F to override this check.
Error while burning bootloader.

Man, RIP for your Arduino. The chip on your board has been damaged. The error says it all.

Now, the chip has no way to be repaired, if you are familiar with SMT component soldering, then you can buy a new chip and replace it with the dead chip. If you are new, then you must get a new Arduino board.

Please tell me if you had any problem, or wrong connections with your Arduino previously. This might have caused the problem. Or for now, check and verify the connection and try to burn the bootloader again. Follow the procedure carefully.

Burning a bootloader is not like the name seems. Burning means saving or writing. Burning a bootloader means that the bootloader will be saved in the Arduino to run. Don't think that it is risky. It is done often by programmers.

..Arnav