About five months ago I built this PC and up until a few days ago all was well. Then I started hearing a very soft, high-pitched tone. It seems to come and go as it pleases. (I can't really link it to any event on the system; I can just be sitting staring at the screen doing absolutely nothing, in the middle of a game, playing music, typing, etc, and it will suddenly start and then it goes away equally inexplicably). It's really starting to get annoying because it seems like it's on at least half the time I'm using my PC now. (Typically comes on for a few minutes, then goes away for a minute or two, then comes back.)
I can hear it on my speakers (plugged in the rear jack) and my headphones (plugged in the front jack) and muting the volume control in Windows does not make it go away. I have up-to-date audio drivers and have made no notable changes to my system in the past month or two. My audio device is an integrated Realtek ALC850 onboard my ASUS A8N5X motherboard, OS is Windows XP Pro and power supply is an Antec SmartPower 2.0 450W ATX12V v2.01 (included with an Antec LifeStyle SONATA II case). If you feel other specs are relevant I can post them. Any suspicions as to what's wrong? Any help you can provide is appreciated beyond words!
I can hear it on my speakers (plugged in the rear jack) and my headphones (plugged in the front jack) and muting the volume control in Windows does not make it go away. I have up-to-date audio drivers and have made no notable changes to my system in the past month or two. My audio device is an integrated Realtek ALC850 onboard my ASUS A8N5X motherboard, OS is Windows XP Pro and power supply is an Antec SmartPower 2.0 450W ATX12V v2.01 (included with an Antec LifeStyle SONATA II case). If you feel other specs are relevant I can post them. Any suspicions as to what's wrong? Any help you can provide is appreciated beyond words!