Faulty sound card caused by the motherboard jumper

: "Computer startup without sound, reload sound card driver and operating system is not good."

Trouble shooting: Turn on the computer, can smoothly into the WinXP, but there is no sound. The lower right corner of the desktop taskbar also does not have a small horn icon, in the "My Computer" on the right button, into the "properties" of the "Hardware" page, see "Device Manager", no yellow question mark warning, sound card items are completely normal. Enter "Control Panel", click "Sound and Audio device", found inside the "put the volume icon into the taskbar" did not tick. Then on the hook, the Desktop taskbar volume icon appears. Open Winamp play songs, as the playback progress bar a little bit to move, the main interface to the left of the visual plug-in also with the music of the Sharp beat, but the sound of the connected speakers still do not have any voice.

sound card settings All normal, but no sound, it seems to be a hardware problem. Carefully check the hardware, suddenly noticed that the speaker next to put two small jumper caps, "Where did this come from?", "I accidentally touched the built-in modem yesterday, and I don't know where it fell ...". The author picks up the motherboard instruction book, looks for inside with the jumper related explanation. In the Sound card settings page suddenly see this: "If you do not want to use the front audio, 5, 6, 9, 10 must use jumper short, so the signal will be output to the back of the audio interface."

Originally this MSI motherboard supports its own audio front panel (unlike the front audio jacks that are present in most chassis, normal chassis of the front audio jack is only a sound card to the audio jack to the front of the chassis, as an extension cord function, if you want to make the rear audio jack has sound output, must be short 5, 6 and 9, 10 jumper (Figure 1). I found the small jumper next to the PCI slot on the motherboard and found it was empty. No doubt, is a friend of the built-in modem was accidentally knocked off, because the friend did not purchase another MSI audio front panel, so the author will directly two jumper caps placed in the specified position. Power on, with the WinXP into the familiar and sweet sound will ring, the original is this is the sound card caused by the reason.