Reply to Gamepad Midi Problem

Hey guys. So basically I made myself a little midi controller with an old gamepad as the brain. I had the thing working perfectly, but I left it plugged in to my computer. When I returned my computer no longer recognizes it, and also cannot 'install the driver software'.

Do you guys believe there is a short or a problem somewhere in my circuitry or do you believe the board itself might be buggered (cheap asian crap)

Any help would be appreciated.
Cheers,
Harry