Hi, I'm new to Arduino and accidentally shorted my board for <10sec before I noticed and unplugged it from my PC immediately. After plugging it back in, it can no longer connect to the Arduino IDE and it cannot be detected in Device Manager. The board's LEDs still light up upon connection through USB/barrel jack and the 5V/3.3V pins work fine. There are no visibly broken/burnt parts on the board. Are there any parts that need to be replaced? Or is it dead for good? Your help would be greatly appreciated. Thanks!
What do you mean with "shorted"? Shorted what, with what exactly?
However it has likely been damaged, not entirely but if the MCU or the serial chip are gone, I'm sorry to say I think you can't do much to repair it: depending on the board and version, you need some SMD tools and already having some practice with them, provided you know what part is to be replaced (and can't detect it just visually).
The 5V and GND pins were shorted.
Welp, thats too bad. I guess it'll just be easier to buy a new one. Thanks for your reply!
Faster, anyway.
What was the source of power to the board when you shorted 5 to GND?
Where was the short circuit? At the 5 volt pin on the board or?
a7
That seems strange if you actually shorted 5V to GND.
Have you tried turning you computer off and on and then see if it appears in device manager?
And try a different USB port.
Your computer USB port most likely has short circuit protection, or at least a current limiter.
When you disconnect a USB device, wait few seconds before plugging it back in, to allow the device to lose power. If you disconnect it and put back in too quickly, it may not reset properly, and the device may not be recognized, until you try again after disconnecting it for few seconds. Test +5V pin to GND pin on Arduino by using a multimeter. If you read 0 Ohms, then it's dead. If not, it might work with some pins burned out. In this case, try another USB port. If you see the serial port in Device Manager, then you are lucky.
It's probably one of the worst things to do... 
+5V is more dangerous than Vin because there isn't at least the voltage regulator before the CPU, so no "user serviceable" parts could help you, sorry.
Just to have a look at some of the other "common ways": 
https://www.rugged-circuits.com/10-ways-to-destroy-an-arduino
Plug your Arduino USB into another computer. Maybe the Arduino is good. Hope so.
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Got a new Arduino and was surprised to see that the same thing was happening.
Turns out that the USB cable I was using broke somehow; it stopped transmitting data but continued to supply power. Everything works fine with a functional cable.
Thanks for your replies!
Glad you found the error
Have fun!
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