My HID bulb won't turn on?

I have a 2012 Honda Civic with aftermarket projector lights. I had HID's installed over a year ago, and my drivers side bulb doesn't turn on. For the past 5-6 months, I noticed that when I start my car, sometimes either the drivers side or passengers side bulb doesn't turn on. So I turn my lights off, and then turn them on and they are fine. But today, my drivers side refuses to turn on. It flickers for just about half of a second and thats it. What could be the problem? Could I have already blown the bulb? Any advice would be good. I didn't install these HID's on my own. I had an auto light shop do it for me.

HID's take a lot of power to turn on, that is why you see new vehicles with daytime running lights that are LED's. Almost no power draw with LED's. So to have them installed like you do and have them act as daytime running lights and night lights is hard on them, especially since your car didn't come with them. Compare your battery size to a domestic cars battery, this will help you understand. So what could be wrong you say? Almost 100% it's not the bulb as it's not really a bulb but I would put my money on it that it is the ballast, this runs the HID, you have a ballast for each light and if you follow the wires you will find it.

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