音效問題

1.圖示 http://home.pchome.com.tw/home/mx400/DirectX.bmp2.DxDiag 說明：※ 請高手幫忙一下

我的音效雖然有聲音

但有的遊戲進入後都變成沒聲音

DxDiag測試會顯示無法執行測試Audio AC97功能。

※主機板為技嘉8ST800

顯卡為MX440

DirectX9.0c------------------System Information------------------Time of this report: 10/4/2005

13:32:02 Machine name: PC009 Operating System: Windows 98 (4.10

Build 2222) A Language: Chinese (Regional Setting: Chinese)System Manufacturer: n/a System Model: n/a BIOS: n/a Processor: Intel(R) Celeron(R) CPU 2.00GHz Memory: 512MB RAM Page File: 118MB used

1161MB available Windows Dir: C:\WINDOWS DirectX Version: DirectX 9.0c (4.09.0000.0904)DX Setup Parameters: Not found DxDiag Version: 4.09.0000.0904 32bit------------DxDiag Notes------------ DirectX Files Tab: No problems found. Display Tab 1: The file nvdisp.drv is not digitally signed

which means that it has not been tested by Microsoft's Windows Hardware Quality Labs (WHQL). Current drivers tested for a WHQL logo are only available on Windows ME

Windows 2000

and Windows XP. New Windows 98 drivers are no longer tested for WHQL logos. Sound Tab 1: No problems found. Music Tab: No problems found. Input Tab: No problems found. Network Tab: No problems found.--------------------DirectX Debug Levels--------------------Direct3D: 0/4 (n/a)DirectDraw: 0/4 (retail)DirectInput: 0/5 (n/a)DirectMusic: 0/5 (n/a)DirectPlay: 0/9 (retail)DirectSound: 0/5 (retail)DirectShow: 0/6 (retail)---------------Display Devices--------------- Card name: NVIDIA GeForce4 MX 440 with AGP8X Manufacturer: NVIDIA Chip type: DAC type: Device Key: Enum\PCI\VEN_10DE