Razer installer wont finish installing

Every time I start up my PC, razer installer runs to install a new update (without asking first) and this disables ALL my audio devices, rendering my PC next to useless as there's no sound coming out of the thing. Then, once the bar nearly reaches the end, it stops, and will not finish installing, leaving me without sound. Killing the program with the task manager is no help, as it just starts up again and my audio would still be disabled. This is really annoying, and has been an ongoing problem for days now. I have e-mailed razer support, over a week ago, and they are yet to reply.