For a few days now, I'm getting weird, electric noises from my PC. At first I thought it's the speakers, but this happens even with them unplugged and on my headphones. Sometimes it's softer, but often it is an aggressive ''errrrrrrrr!!'', this happens more frequently in games. I don't know if this may be related but today my mouse got unplugged and plugged on it's own.Not physically, of course haha. It just stopped working (followed by the sound of it being unplugged) and then worked again. Also, the sound is occasionally followed by a quick freeze of the entire screen (so far experienced only while gaming).