2004 Audi A6 Something electrical

I turned on my car and tried to turn the head light on, but they didn't come on. I then attempted to turn on the high beams, and they didn't work, then I tried to blow my horn, use my turn signals, and they didn't work. I've checked all of the fuses for each unit that didn't work, but the fuses were all good. My hazard lights, and side marker lights work. I'm able to roll my windows up and down. I went to a shop that told me that it's probably my Body Control Module, can someone inform me on whether that's the issue?