Why is it that my computer is often turned on and there is no sound, and it only happens after it is

1. Digital signal processing chip.

Digital signal processing chips can complete a variety of signal recording and ** tasks, and can also complete many processing tasks, such as audio compression and decompression operations, changing sampling frequency, interpreting MIDI instructions or symbols, and controlling and coordinating direct memory access (DMA) work.

2. A d and d a converter.

Sound originally appeared as a ribbon of analog waveforms, which had to be converted into digital form before it could be used in a computer. To achieve this conversion, the sound card contains an AD converter that converts the analog signal into a digital signal, so that the data can be stored on disk.

In order to send the sound output signal to the speaker or other equipment for broadcasting, the sound card must use a DA converter to convert the digital sound in the computer into an analog signal for broadcast.

3. Bus interface chip.

The bus interface chip transmits commands and data between the sound card and the system bus.

4. Synthesizer.

The synthesizer is responsible for synthesizing digital audio waveform data or MIDI messages into sound

5. Mixer.

The mixer can mix the sound signal of Xiangtong Banquet in different ways, such as microphone or line input, CD input. In addition, the mixer provides users with the ability to control the volume by software.

There may be a problem with the sound card, try to fix it.

You can use Master Lu to drive.

It may be that the driver of the sound card needs to be updated.

The fan didn't start, remember to clean it regularly.

System problems, sound card driver problems, software conflict problems, and hardware problems are all hardware problems.

The solution to the computer silence: there are two solutions to repair the system and install the sound card driver with software (first look at the small speaker or see if the mute is set in the control panel, check whether there is sound output through the headphones, if there is, it is caused by the failure of the speaker, and it is caused by the damage of the sound card driver, such as the destruction If it is a software such as the driver wizard to install the sound card driver, if it is caused by hardware problems, you can't solve it, it is recommended to overhaul it).

1. Press F8 to press F8 to get the advanced option to appear in the release of the power, and select "The latest correct configuration" Enter to repair.

2. The simple way is to use the system restoration that comes with the system before the slag of the system, and restore it to the time when you do not have this failure (or use the restoration software to restore the system).

3. If the fault persists, please reinstall the sound card driver (reinstall the system if it is not possible).

Use the system that comes with the system restore method:

The system comes with the system restore: "Start" "Programs" "Accessories" "System Tools" "System Restore", click "Restore my computer to an earlier time", press Next, you will see that the date page has a dark date, that is the restore point, after you select, click Next to restore (win7 restore the system, in the control panel and then the device and security sub-select the closed item and then the backup and restore sub-option).

**After installation, open the driver wizard, it will automatically detect your computer's hardware information, after the detection is completed, click the "driver update" button, switch the interface, and then click "automatic installation", and then click the "start update" button in the lower right corner (**** to your hi).

First of all, the computer is silent, but sometimes the problem is more complicated, involving both hardware and software problems. Therefore, it is necessary to find out the cause first, see if the software or hardware is malfunctioning, and then prescribe the right medicine for the problem. We must not mess around for unknown reasons, because if we don't do it, the system will be paralyzed, and the trouble will be big.

1. Check whether the sound card, cable, speaker and other equipment are connected normally; Run anti-virus software for anti-virus;

2. Right-click "My Computer" -- Properties -- Hardware "Missing Code --- Device Manager", and open "Sound, ** and Game Controller" Is there a problem, that is, see if there is ** in front? "If so, reinstall the driver for this device to solve the problem;

4. When there is no sound and no speaker, open the control panel--- Add and remove programs--- add and delete Windows components, put a check mark in front of "Accessories and Tools", click "Next", and then, shut down and restart, the system will prompt you to install new hardware, follow the prompts to install;

5. Uninstall the sound card driver, reinstall or upgrade the audio driver;

6. When the sound card driver is installed, the prompt "AC chip cannot be found" appears, it may be that the computer is poisoned, or the sound card driver has been deleted by mistake due to illegal operation, or there is an internal software conflict. The solution is to reinstall the system and drivers.

7. Mo Chan simply ignores it, waits for a period of time after shutting down and then restarts it, sometimes the sound problem will solve itself. You might as well give it a try.