Max/MSP sound not working on my laptop

rpagliari's icon

I just installed the trial version and built a very simple scheme: an oscillator with variable input frequency. When I lock it and start the program, I can only hear noise, some sort of very low volume white noise, even if the volume set is between -1 and 1. How can I fix it? Do I need drivers for it? I am currently using windows 7 on a Lenovo laptop.