Help! The Board does not work.

Randomly connected the contacts of the microcontroller on the Arduino Nano.I assume that the Board was erased with software. Also the computer sees the Arduino. P. S. the Electricity on Board is checked.

Случайно соединил контакты микроконтроллера на плате Arduino Nano.Предполагаю что с платы стёрлась программное обеспечение. Также компьютер не видит Arduino. P.S. Электричество на плате есть, проверил.

This is not much help as a description.

What does it do? Are there any LEDs lit? Does any LED flash? How is it powered?

Give us more than a brief outline of the problem.