It's been a couple months since this started happening. I hear crackling/static-like noises coming from my laptop's speakers whenever sound is playing. Lately, I noticed it only happens when my CPU usage is high (at least ~70%). I hear it mostly while playing videos or even when Windows starts up. I tried reinstalling my sound driver
(Conexant HD SmartAudio 221), which didn't fix the problem. Any help would be greatly appreciated!