I tested light music on arduino nano and suddenly everything went out. What to do?

Question

Arduino

When I tested light music on arduino, suddenly everything turned off. After that, the computer does not see any port other than com 1. The pow LED is red.
Please tell me it's curable.

Answer 1

Consider that there is no cure. Understand what you did wrong so as not to burn the next arduino.

Answer 2

It is very likely that the arduino khan. Did you feed the LEDs from it?