When my League of Legends client was hanging up, all of a sudden, I just hummed as a sound, everything else has not sounded since then. However, it does not seem to be the hardware, as the sound gets louder and quieter when I turn the mixer up and down, and even when I plug in different headsets / headsets, that sound is transmitted to the headphones. This is a laptop, I do not rule out that League has something to do with it, since since yesterday there are strange problems, such as that it can't be closed and crashes constantly. Several reboots did not help. Even if I deactivate the laptop speakers by Soundcontrtol remains the sound. Drivers are also all current. I'm really desperate, I hope you can help me!
Small update, the internet on my laptop does not work properly anymore.
It stands if I keep it [wlan name] Internet access
Unidentified network, no internet access
This happens at all Wlans, this comes to the Internet sites call,
but the internet is not enough to start videos etc.
As soon as I start League (which lasts forever and when I'm in it too ned works), a red cross appears from the speaker icon, which goes away after a few minutes, as long as I open any internet page. The hum is still unchanged.
Try reinstalling your audio driver and / or LoL…