light problem

invalid@example.com (bkatravas), bkatravas
Fri, 08 Dec 2006 10:00:38 +0000

my low beams wont turn on. i just bought the car used, then only one light was working. now none. I hear a buzz sound coming from one light nothing from the other. I have the HID Xenon headlights. Could it be a ballast or a bulb? I pulled out the bulb, but i don't know how to check if its blown. help me.