Welcome to in_thread @tomomnom!
It’s quite alright. The goal of Sonic Pi is to try to make the experience as simple and beginner-friendly as possible, so if you’re having issues, I hope we can help you solve them! 
Audio driver issues are not exactly my strongest area of expertise, but to start off with, perhaps it might be helpful to share details of the audio devices that are available on your system? what do the contents of C:\Users\[you]\.sonic-pi\log\scsynth.log reveal?
Also, note that it may be due to Windows performance settings. Energy saving settings can interfere with Sonic Pi, as described in this topic for example:
It might be worth checking that if you haven’t already