Not sure if this is the best place to put this, but my Teensy 3.0 has stopped receiving programs, and is not recognised in any of the ports when i plug it in. I have a second Teensy 3.0 and this is working fine in both ports, and same cable.

I have the Teensy 3.0 and an Adxl345 breakout board, with the intention of connecting to leds, but i haven't got that far yet!

Any ideas?