与其它的常见故障相比，笔记本没有声音在所有的笔记本维修案例中所占比例不大，在本文唯佳就简单介绍一下这个故障的常见原因和维修方法。

Compared with the common fault of others, the notebook is not sound in all notebook repair case proportion, in this http://www.suyinbaogw.com/ paper only good will simply introduce the common causes of the failure and repair method.

笔记本没有声音从具体分类上来说有两种：软件故障和硬件故障。

The notebook is not sound from the specific classification, there are two: software and hardware fault fault.

硬件故障从表现形式上又可细分为三种情况：

Hardware failure in the form of http://www.fscwine.com/ presentation can be subdivided into three kinds of situation:

一：软件故障

A: software fault

软件故障引起的笔记本电脑没有声音是最常见的，比如用GHOST安装的系统，有许多默认安装的并不是本机的的声卡驱动，这时就要手动去删除并安装正确的驱动程序。最好按照自己笔记本的型号到官网下载对应驱动。

Notebook computer software failure http://www.bojinv8gw.com/ caused by no sound is the most common, such as using GHOST to install the system, there are many installed by default and is not a native of the sound card driver, then we must manually to remove and install the correct driver. The best according to their own notebook models to the official website to download the corresponding drive.

在HP笔记本维修中常会遇到预装VISTA操作系统的笔记本改成XP系统时声卡驱动不能安装，这时就需要更换BIOS版本才能解决问题。有的机型在装声卡驱动时还要配合相应的程序补丁。

Meet with VISTA operating system in the HP notebook repair often notebook into XP system sound card driver is not installed, then you need to replace the version of BIOS to solve the problem. Some models in the sound card driver installed to match the corresponding patch.

声卡自带的如“Realtek高清晰音频管理器”这种管理程序，如果不小心设置错误的话也会出现无声的故障的。同理，某些音频类的软件或游戏在卸载后有时也会把声卡驱动文件误删，从而导致声卡无声。一般只要重装驱动就可以解决问题了。

Sound card with such as "Realtek HD Audio Manager" this management program, if not careful setup error would appear silent fault. Similarly, some audio software or games in unloading and sometimes the sound card driver files deleted, resulting in no sound. As long as the general drivers can solve the problem.

二：硬件故障

Two: hardware failure

硬件故障是笔记本送修的主要原因。因为软件引起的故障终极解决方法也无非就是重装系统，相信朋友们都会吧。而硬件故障引起的笔记本没有声音则需要有点专业知识了，本文的内容主要是针对硬件引起的故障。

Hardware failure is the main reason for notebook repair. Because the ultimate solution software fault caused by it is to reinstall the system, I believe that friends will. While the hardware failure caused by the laptop does not sound need some professional knowledge, the main content of this paper is the hardware fault caused by.

笔记本电脑没有声音主要是由声卡周边电路出现故障引起的。

Notebook computer no sound is mainly caused by the sound card peripheral circuit failure.

笔记本声卡电路的主要故障有：喇叭无声音、麦克风无声、无法录音、内部无法消音(即拨放内接喇叭时,插上外接喇叭,内接喇叭本应无声但却有声)等。最常见的

The main fault notebook circuit: no sound, microphone, recording, silent not internal cannot silencing (i.e. play inscribed speakers, plugging the horn, inscribed horn should silent but sound) etc.. The most common

就是喇叭听不到声音。

Is the speaker can't hear the sound.

我们在进行笔记本维修时先要区分本文开头所说的几种情况：

Several circumstances we should first in notebook repair distinguish between said at the beginning of this article:

1：耳机有声音，喇叭无声

1: the headphones sound, horn silent

这种情况有两个故障点：第一，喇叭或喇叭线损坏。一般多是一侧喇叭没有声音，比如在DELL笔记本维修中，DELL 640M喇叭在屏框下方，而线就在屏轴里很容易磨损。

This situation has two fault points: first, horn line damage. Is generally more side horn without sound, such as in the DELL notebook repair, DELL 640M horn in the screen box below, and a line on the screen shaft is easy to wear.

第二，功放IC或其周边电路故障，往往是芯片本身故障直接更换即可。

Second, power amplifier IC or its surrounding circuit fault, is often the chip itself fault directly replaced.

2：喇叭有声，耳机无声

2: horn sound, headphones sound

这种情况多是音频接口损坏，插入音频头时无法切换，耳机就没有声音。维修中也见到过因切换电路的小MOS管损坏引起此故障的。下图为HP V2000笔记本没有声音的维修图。

This is the audio interface damage, unable to switch into an audio head, earphone, no sound. Repair is also seen by switching circuit of small MOS pipe damage caused by the fault of the. The HP V2000 notebook without a sound repair diagram.

3：两者都无声。

3: both are silent.

这个是三者中维修难度最大的了。排除了软件方面的故障就要从硬件着手了， 这时在“设备管理”中查看声卡硬件设备往往检测不到或是在个叹号。故障点多是南桥声音相应控制模块损坏，维修一般是做BGA更换南桥。

This is the three in the most difficult to repair. To solve the problem of software is to proceed from the hardware, then in the "equipment management" view sound hardware devices are often not detected or in a exclamation mark. Multiple fault points south bridge is a sound corresponding control module damage, repair is generally done BGA replacement bridge.

另一种情况是在“设备管理”中查看音频设备正常，只是没有声音。故障点是声卡IC及周边电路损坏，更换相关IC即可修复。

Another kind of circumstance is in "equipment management" view the audio equipment is normal, but no sound. The fault point is the sound card IC and peripheral circuit is damaged, replace the relevant IC can repair.

笔记本没有声音喇叭无声的常见原因和处理方法