I have purchased an Arduino Uno R3 and when I was working with my project, by mistake some wire went to the board and connected R3 pin with itself (connects pins of the LED). Then pin 13 LED fired and after that, all pins became dead. When I upload, RX and RT LEDs blink like usual, but all other pins don't work. I have uploaded a program with all pins set as output but none work.
Does that mean my board is dead? How do I check if my board is dead?