With my dad's PC sound is messed up. All the sound you hear is white noise. Even the windows sounds along with gaming sounds.

CAS: RaidMax Smilodon Med-Tower 420W Case w/ Side-Panel Window

CPU: AMD Athlon™ X2 4400+ Dual-Core CPU w/ HyperTransport Technology

CD: SONY 16X DVD-ROM 

FLASHMEDIA: INTERNAL 12in1 Flash Media Reader/Writer

FAN: AMD ATHLON64 CERTIFIED CPU FAN & HEATSINK

HDD: Single Hard Drive (200GB SATA-II 3.0Gb/s 8MB Cache 7200RPM HDD   

MOTHERBOARD: Asus M2N SLI NVIDIA nForce 560 SLI MCP Chipset DDR2/800 SATA RAID PCI-Express MBoard w/GbLAN,IEEE1394,USB2.0,&7.1Audio

MEMORY: (Req.DDR2 MainBoard)2GB (2x1GB) PC6400 DDR2/800 Dual Channel Memory

OS: Microsoft® Windows Vista™ Home Basic w/ Service Pack 1 [+89] (32-bit Edition)

SOUND: HIGH DEFINITION ON-BOARD 7.1 AUDIO

VIDEO: NVIDIA GeForce 8400 GS 512MB 16X PCI Express

So, are you saying you hear white noise along with the windows sounds and game sounds? Or you just hear white noise regardless of what is going on with the PC?

First thing to try, is going into the Device Manager and remove the sound card, and rebooting. Let the sound card reinstall, and reboot again. Device manager: right click on My Computer and Select Manage. Then, select Device Manager on the left from the Window that opens. Under Multimedia Controllers, find your sound card. Should say something similar to what you posted for specs. Right click, and remove/delete. Let it work, and close all your windows. Might prompt for a reboot, might not. Reboot anyway. Let it come back up, wait a few minutes and reboot again. Go back into the device manager and make sure the sound card is back. Check your sound.

Another thing to do is check online for updated drivers. The drivers will come from the motherboard manufacturer's site. So, that would be asus.com. Just go to support, find your motherboard under I think socket AM2, and look for audio drivers. Download and install then reboot. Probably try this before removing and reinstall via device manager.

Also, check your speakers/headset to make sure they are not the issue.

-Doc

Hear white noise regardless of what is going on with the PC?

And I will try what you posted.

Other things you may want to try include:

-Clean the jacks with can o' air.

-Get better cabling.  It maybe just the cables are bad.

-Some new device maybe causing interference.  Move stuff away and see if it improves.

-Save the world and then blackmail the world leaders into getting you new stuff.

 Also, check this for more help: http://forums.devshed.com/multimedia-hardware-107/onboard-sound-ac97-problem-379023.html

Got it working. Thats guys.

 

What was the problem? What'd ya do to fix it?

-Doc

I basicly did what you said about rebooting and stuff but still did not work so I so i brought  it home to work on it. Hooked it all up and started to download the driver and bam is started to work.