Unexpected failure

I just got a new BeagleBone Black and have flashed Debian 7.9 successfully. I was connected with USB to a Mac running OSX 10.10.5 Yosemite. I was using a 5v 2A power adapter and a TP-Link TL-WN722N wifi adapter. I used both with another BBB for about a year with no problems. I was in the process of adding the Adafruit wifi-reset script to the startup services when the BeagleBone died. Nothing else was connected.

Now whenever I try to boot the system, there is a single momentary flash of of the power light and thats it.

Is this likely just bad luck on my part? Is anyone else having this problem?

Thank you
Fred Patrick

It may be that there is a short somewhere in the circuitry and the intelligent power supply is detecting this and turning off the power. Check with a magnifying glass, or preferably a loupe, to see if there are any connections being made that are not supposed to be there.