yeah really hoping its not the m4 making noise even though it is being fed filtered 12v. Im running the msi 965gm with a dell mini lcd via the lvds connection. have some china made multi touch bonded to the screen connected usb via the motherboard header. only thing on the rear usb is the bluetooth dongle for my mini keyboard/ mouse. haven't even connected the xm radio adapter and getting noise through the rear audio jack to the powered computer speakers.
might end up running the atx wires through some sheilded wrap and maybe a ferrite bead. any info would be greatfull.