Presumably, many people have encountered such a situation. After the computer (desktop) redo the system, there is no sound on the front panel. There are a lot of solutions on the Internet. This article is a detailed understanding of Baoyun and your friends. Let’s know what it is. [Two standards] "AC97" standard (Audio Codec97), which appeared in 1996, the market began to spread in 1997, and now it is still "old dead". The wiring standard for many desktop front panels is still AC97. HD Audio is High Definition Audio, which means high-fidelity audio. It is now very popular. The standard sound card is still compatible with AC97. As for the advantages and disadvantages of the two standards, we will not discuss it for the time being, because this article is to solve the silent fault. [Different wiring] The wiring standard between the front panel of the chassis and the interface of the computer motherboard is different for the two specifications. The motherboard interface supports two specifications, and some chassis have both HD Audio and AC97 headers, and some have only one header. The shape of the interface on the motherboard is the same for both specifications. The difference is that the pin definitions are different, so both connectors on the chassis can be plugged in, but with different consequences. [Silent problem with the front panel] If the AC97 connector on the chassis is plugged into the motherboard interface and there is no adjustment on the software, there will be no sound on the front panel. Of course, this usually happens after the system is redone. The solution is to use the “Realteck High Definition Audio Configuration” management program in the Control Panel, “Disable Front Panel Socket Detection”. If you assemble your own computer, or if you buy a new computer (the installed brother is lazy), “disable the front panel socket detection”, there is still no sound, to eliminate wiring errors and drive failures, then there is a case where the BIOS is The front panel is set incorrectly. You need to set the front panel type to AC97 in the HD Audio controller. [Dual sound card output problem] Computers with discrete graphics cards, most of which have two sound cards, one is the motherboard comes with one, the other is the graphics card. The graphics card HDMI interface can output audio, so the video card will also have a sound card. Incorrect selection of the output device will also result in no sound. If you are only using a speaker or earphone on your computer, the output device should select the sound output device of the motherboard; if it is an external device with a HDMI cable connected to the TV/monitor with speakers, you need to select the sound output device on the graphics card. The following picture is an example on the Baoyun notebook. Let's make it clear and understand the meaning. Set the playback device to be the default device. If you don't know which device you should choose, try it one by one! Duang Completed this article from [System Home] www.xp85.com