Just started renting a new home. Hooked my PC up, including my Logitech X-540 speakers. When I turn the volume knob up and down, the volume crackles and the volume jumps up really high or goes down very low. If I sit there and do nothing, the volume will go up or down on its own occasionally. After researching topics related to repairing problems with these specific speakers, it becomes clear this isn't a normal issue. One or two folks mention something similar, and in both cases someone suggested they change electric outlets. This worked in both cases, but does not work for me. Discouraged I tried my Fatality Headset. Turned the volume down, turned on some music, and as soon as I start to turn the knob up the volume jumps so high my ears are aching for the next ten minutes. I then plugged the headset into my phone and played music. But here it works normally, just how I would expect it to. To me, this seems like the problem isn't the speakers themselves. I consider myself to be both proficient and highly experienced with Windows and my RealTek drivers. I don't have access to another PC. No friends or family in the area, literally no way to test these things elsewhere. Not sure if I can test the electricity in the house or if it is even possible. I'm dumbfounded and out of options for testing and trial and error. I'm hoping I've missed something obvious. Any ideas?