Hey everyone and thank you for taking the time to read this.

Recently I started noticing that I will get static sounds if I leave my computer on for more than a few hours.  I used multiple usb headsets along and speakers and still get this problem. 
I upgraded my psu to this ONE a couple months back and restored my cpu back to stock clock.
 
I also tried without any realtek drivers and with the realtek driver.  Problem still persist after a couple of hours



System spec
i5 2500k -> 4.4
ASUS p8z68-pro
evga 750w gold


Double check all connections...Made sure they are correctly connected multiple times just checked again just to make sure.You may have a small short in the system then...is this a desktop ? ?
If so make sure all MBoard standoffs are installed properly...
Also if it's an addon sound card the BRACKET hold-down screw ACTS as the ground...make sure it's in place...if it is already remove and re-seat the sound card with all power removed to the system and see if this HELPS...made sure there was no shorts all standoffs installed properly and yes this is a desktop.  This is also the integrated card.Did you remove it clean the contacts and re-seat it yet ? ?Will do that this weekend,
unless you mean removing the sound card...don't think I can do that

Though is it possible for you to explain why it only occurs after a couple of hours LIKE the static noise would only occur then and a simple restart would fix it until a couple of hours later.