For the past few weeks, I have had an odd and never before seen issue. When my system is up for a few days, My speakers get static/crackeling when sound plays out of them. Wav, MP3, video game, or movie it does'nt matter. After a few days, I get this crackel randomly when playing music or whatever. I have not updated drivers or installed anything recently, and when i reboot, it will be gone, but comes back within a few days. Any ideas?