广东普德化工:所有播放器不出声音

突然所有播放器不出声音了，我重启两次不行，我能听到开机的声音。realone和media player都直接播放不出声音，暴风播放前还出来一个窗口警告：无法解析媒体中的某些流，您的系统可能尚未安装回放所需的译码器或滤镜。
以下为无法找到可连接滤镜的媒体流的信息：
媒体流 1
Mpeg 分离器
MPEG-1 音频解码器
音频切换器

媒体类型 0:
--------------------------
AM_MEDIA_TYPE:
majortype: MEDIATYPE_Audio {73647561-0000-0010-8000-00AA00389B71}
subtype: MEDIASUBTYPE_PCM {00000001-0000-0010-8000-00AA00389B71}
formattype: FORMAT_WaveFormatEx {05589F81-C356-11CE-BF01-00AA0055595A}
bFixedSizeSamples: 1
bTemporalCompression: 0
lSampleSize: 1
cbFormat: 18

WAVEFORMATEX:
wFormatTag: 0x0001
nChannels: 2
nSamplesPerSec: 44100
nAvgBytesPerSec: 176400
nBlockAlign: 4
wBitsPerSample: 16

下面有个按钮：在互联网上查找译码器。我按了以后出现叶面，内容如下：
Warning: mysql_connect(): Can't connect to MySQL server on 'mysql.sourceforge.net' (111) in /home/groups/g/gu/guliverkli/htdocs/codec.php on line 14

Warning: mysql_query(): supplied argument is not a valid MySQL-Link resource in /home/groups/g/gu/guliverkli/htdocs/codec.php on line 19

Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in /home/groups/g/gu/guliverkli/htdocs/codec.php on line 25

Warning: mysql_query(): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2) in /home/groups/g/gu/guliverkli/htdocs/codec.php on line 34

Warning: mysql_query(): A link to the server could not be established in /home/groups/g/gu/guliverkli/htdocs/codec.php on line 34

Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in /home/groups/g/gu/guliverkli/htdocs/codec.php on line 35

Warning: mysql_query(): supplied argument is not a valid MySQL-Link resource in /home/groups/g/gu/guliverkli/htdocs/codec.php on line 37
Sorry, we couldn't find any codec with that guid in our database, the good news is that we will investigate your submission and probably add it later.
我现在找到一个办法解决，就是用我的电脑－设备管理器－更新驱动程序，重启以后电脑显示我按装的设备有问题，然后我再用上个步骤返回驱动程序，就可以识别出声卡了．
但是下次再开机还是无法识别声卡！