1) Is there also an onboard sound device? If yes, is it disabled in your BIOS?
2) Click Start->Run,enter: dxdiag. Click the Save all Information button. Look at the file to find what it says about Sound Devices. It should look something like what follows. Copy/paste the sound info into your next post
Code:
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Sound Devices
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Description: SoundMAX HD Audio
Default Sound Playback: Yes
Default Voice Playback: Yes
Hardware ID: HDAUDIO\FUNC_01&VEN_11D4&DEV_194A&SUBSYS_10280294&REV_1004
Manufacturer ID: 65535
Product ID: 65535
Type: WDM
Driver Name: ADIHdAud.sys
Driver Version: 5.10.0001.7255 (English)
Driver Attributes: Final Retail
WHQL Logo'd: Yes
Date and Size: 5/18/2009 07:26:54, 339456 bytes
Other Files:
Driver Provider: AnalogDevices
HW Accel Level: Full
Cap Flags: 0xB5B
Min/Max Sample Rate: 44100, 48000
Static/Strm HW Mix Bufs: 1, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: No, No
I3DL2(tm) Listen/Src: No, No
Sensaura(tm) ZoomFX(tm): No
Registry: OK
Sound Test Result: Not run