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Network Is Messing With My Audio? Please Help

I just build a new Home Theater PC running the following:

MOTHERBOARD: ZOTAC IONITX-G-E ITX ION
PROCESSOR: Intel Atom 330 CPU
VIDEO: On Board Gforce 9400 VGA HDMI-Out
HARD DRIVE: 500GB SATA 7200RPM 16MB Buffer
MEMORY: 4GB (2x2GB) PC6400 800MHz
TV TUNER: Hauppauge HVR-2250
OPTICAL: ASUS 4x Blu-Ray ROM

NETWORK: ATT U-Verse Wired

OS: Windows 7 Ultimate

SOFTWARE:
Corel WinDVD 2010
MYMOVIES for windows media center
PlayReady PC
Nvidia Display Control Panel
Nvidia Drivers
Win7Codec
Microsoft Silverlight

Okay here is my problem, when I plug my HTPC into the network after about 30-sec. I start getting what sounds like multiple radio signals overlapping each other blasting out of my speakers on my TV. If I unplug the network cable the sound continues for about 15-sec. then it disappears. What is going on?

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Comments
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Some items must accept radio interference.

The FCC has rules as to which may and may not.

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Try Shielding The Speakers From Interference

There are better shielded cabling on the market, (either ethernet or COAX) although it's usually more expensive.. Maybe try moving the speakers away from the computer and its cabling. Likewise, if anything on the computer is wireless, including the TV tuner and U-Verse's sending equipment, or there is a cordless telephone nearby, it will cause interference.. Move such items or shield such items so the speakers aren't close.

See the information for a similar problem with a HAM radio and ATT U-Verse:

http://www.eham.net/forums/Elmers/212660

Hope this helps.

Grif

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