Hey thanks for the reply AUSSIE, It appears to be my ac power adapter. It even gives feedback with out running TV tuner. When I called SAGER tech support about problem they had me mute auxiliary, but did not try to trouble shoot problem. So when I ran TV tuner witch uses auxiliary I still had problem. Now if I could get clear a picture on all TV tuner channels and get s/pdif output to bypass system interference. I had Creative Inspire GD580 with digital decoder box and could not get s/pdif sound on any program. I Tried both Creative and Sager tech support. So I thought there must be compatibility issue and returned the GD580. By the way my system is the np8890-V with 1024 MG ram, DVD-RW, 60 gig HD at 7200 rpm, 40 gig second HD, MP3 with 256MG ram. And I have the newest drivers and programs from Sager. Sager gave me RNA# for the problem I am kind of thinking about the 8790 what do you think? THANKS AGAIN FOR YOUR HELP DUDE!