64-bit Win7 computer has no sound, reloading the sound card can not be solved

Originally, I had a 2G memory stick. It was 2G 800MHZ. After adding a Kingston 2G 667MHZ memory stick today, there was no sound. Reload the sound card and then restart it. If you try N, it won't work.

My computer is Win7 64-bit. I used to have sound all the time. There is no sound when I add a memory stick. It is indeed enabled to "disable the signature jack detection", and also reloaded the sound card driver many times with the driver life. The latest version.

Later, I opened the driver management and found that there are actually 2 sound cards inside. Figure: An HDMI sound card, a sound card. I thought it was this problem at first, but I didn’t know it later.

It took nearly an hour to get mad. Finally, finally, share the solution (backup):

1) Connect the computer audio to the middle of the second row behind the jack. I used to pick up the last hole, because there is a pattern of headphones.

2) Select “Speaker” in the sound controller instead of “realtek digital output” Many people will mistakenly think that they want to choose realtek digital output

3) There is sound, but when the sound does not play music, there will be a magnetic sound. My stereo is a USB stereo. I changed the USB interface and inserted it into it.

If your computer has no sound, you may want to try this method.