I need help. Just a few days ago my BF537 board works perfectly fine as I am able to detect it on my pc and all. However, as I switched some switches on the board and plugged it in after, it won't work anymore. The LED for the power doesn't respond. What could be the possible problem and what could be the causes? Also, even though the BF537 is not connected to the computer in any manner, but only the DC supply connected to it, should it have some kind of response still?