I believe I was in the process of starting up the APU. I have recently found out that it was Ground Services Xtreme that was causing my gauges to freeze up. Very weird. I would however like a solution to the beeping once the battery was started.
After downloading, installing, and activating both the base 737ngx as well as the 600/700 model expansion I started a flight. I changed the panel state to Cold and Dark via the FMC. After flicking on the battery, A strange beeping noise began. Once the beeping started, none of the gauges or switches would move. I do in fact have a legitimate copy of the ngx, so that is not the problem. Any help would be very much appreciated. Thanks a lot!