Push button issue

Hello all. I've just begun learning Arduino and physical computing and have come across and interesting problem along the way. When I plug a wire from the Gnd to my mini breadboard, the arduino shuts off and my computer quits recognizing it. Anybody know why this is? Any help would be greatly appreciated.

Are you sure you're connecting everything correctly? Can you post a picture of your connections to help us to understand them?

look for a short circuit- sounds like you are shorting +5 and GND.