Failure phenomenon:B490 and other models in the use of external speakers or headphones occasionally appear in the built-in speaker at the same time audible, if you try to plug and replace other speakers or headphones still have this phenomenon, you can refer to the following instructions to operate.
Solution:
1. Check whether the driver is up to dateTo Lenovo-driven Web site to download the latest
When using the computer, the speaker does not sound, but through detection, the sound card is normal.
The appearance of this situation first check the speaker power cord, connection line, there is no good. Then check if there is too much dust, too much dust will lead to bad contact. If the problem persists, you can switch speakers to other computers and c
Detailed Win7 system under the computer speakers have current sound method: Because the display of the surrounding magnetic field is very sensitive, so as long as the speaker close to the monitor, carefully observe the screen image has no local color or the overall color shift, you can test the performance of the stereo. The speaker's magnetism originates from the loudspeaker, the magnetic speaker's loudspe
It is very common for computers to appear without sound, but there are many reasons why computers do not sound, and if you want to eliminate them all, sometimes you don't know when to exclude them. But if you're a win7 system, there's an easy way to find out what the problem is.
1
Win7 has a feature that automatically helps you find the problem.
Click on the Start menu, Control Panel, in the system and s
Do not know whether a user friend and I encountered such a situation, whether the computer is plugged in headphones or speakers, in front of the chassis and the headphone jack at the back of the test several times, Win8 pure version of the system still no sound.Now let's take a look at the lower right corner of the desktop the volume icon displays an "X" symbol, moving the mouse over the volume icon and discovering that "no
What should I do if my computer's speakers, headphones, and audio devices have no sound ?, Speaker audio device
Computer speakers, headphones with no sound inserted. I have not changed to mute. Why is there no sound? How can I set up a playback device in Windows 7? If I che
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Originally in 2.6 in the kernel is with ALSA sound card driver, loading system is also a sound, drive is 1.0.11. Sound is there, but the built-in speakers out of the outside, the outside is not a sound, depressed. Look at the Internet, it is said to update the driver, today
To facilitate the operation of the demonstration, we assume that the computer's hardware is working properly, but the headphones are not plugged in to see how the system will give us a hint.
Open the start menu, Control Panel , in the system and Security , select Find and solve problems ;
Put
this picture away.
expand this picture
Turn on the hardware and sound , under the
Originally in 2.6, the kernel was equipped with ALSA sound card driver, and there was sound when the system was installed. The driver was 1.0.11. Sound is there, but the built-in speakers come out, the external will not sound, depressed. I looked at it online and said it was
There's no sound on the computer speakers. It is probably because of the problem of sockets, we suggest that the speaker to move the Jack to the back, if you need to plug in front of the need to enter the BIOS settings set it.
If the original can be normal playback, after a period of time there is no sound, then we can do the operation:
1, the first speaker is
The computer has no sound and prompts that no speakers or headphones are inserted. How can this problem be solved ?, Speaker headphones
The test is successful. You can try it.
Right-click the volume icon, and then click "sound (S )",
Click "Recording". The microphone displays "not inserted" and the line Input displays "not inserted"
Click "play"
First of all, we do not plug in headphones, in the case of computer hardware equipment, to see what the system will give a hint.
Open the Start menu-control Panel to find and troubleshoot problems in the system and security.
Turn on the hardware and sound, select Play audio under Sound options, and in the Play Audio dialog box, click Next.
In the Failure dialog box, select Headphones, and c
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