The Mother Board

[GEORGIAN]

PSU's are good ones, better than HP :CM, Antec and OCZ .

I don't have good Sound card, tried old one and didn't find drives for W7. It was Creative CT5807.
_________________

[Karlsweldt]

What type of speakers are used? If analog type and the output is digital, then garbled noise or no sound. Check the properties of the audio output. If it defaulted to digital and you have analog speakers, then reset the output to analog. Headphones do not respond to digital signals either!
Either from the control panel/system/device manager path, or from a double-click on the speaker icon in the SysTray box.. should get you a tic box for "digital output". Ensure it is not checked.
_________________
F@H.. to solve mankind's maladies.. in our lifetimes!

[GEORGIAN]

I'm using regular 2.1 speaker system, tested 2 of it. PC doesn't has Digital output, just 3 jacks. And in Sound menu i was unable to find "digital output"
box .
Mob was supported by cheapo 20pin PSU even on it is installed 24 pin connector plug, so i changed it by 24 pin PSU, do you thing extra 4 pin killed some CAPS?
_________________

[Karlsweldt]

A PSU with only 20 pins on a 24 pin socket may tax the connections a bit.. especially if the CPU is of high speed and is working hard. The motherboard traces can handle only so much current.. same for the PSU lead wires. The change to a 24 pin design was intended to allow heavier current flow with no damage. There are adapters that allow a 20 pin plug to mate to a 24 pin socket.. and are not expensive. While the wires carrying the current may get a bit warm, they are in moving air, and should suffer no harm. Motherboard traces and solder connections may overheat with excess current!
Analog speakers cannot reproduce audio in digital format. From either the audio device's program listing, or the double-click on the speaker icon, or the hardware device manager page, there should or will be a tic box to enable digital audio output. If you note the audio output on a display being active, and the OS deems it "working properly", default to digital output may be the cause.
Then too, there likely is a 10-pin header on the motherboard for front-panel audio connections. If the front-panel connection is not used, two jumpers must be placed on pins #5~6 and pins # 9~10 to enable the rear panel jacks. If the speakers are not self-powered, there will be insufficient power to drive regular speakers. headphones may provide sufficient volume, however.
If the audio header has jumpers as noted yet no audio output to the speakers, suspect that a driver or program change has caused the audio output to default to digital.
The pins on the audio header have odd pin numbers on one side, even on the other. One pin is missing (#7) as a "key" to the plug. A small arrow on the board surface indicates pin #1.
_________________
F@H.. to solve mankind's maladies.. in our lifetimes!

[GEORGIAN]

I paired selected jumpers and nothing. I don't know what else to blame...
_________________

[Karlsweldt]

The 'common' chipset for audio on-board is the AC '97 class. This is not a brand, rather a standard for compatibility. The chipset will have a brand name on it, as well as a type and date of manufacture. The audio chip may only be around 1/2" square or less. For add-in sound cards, the chipset may be larger.. and have its own dedicated memory.
All audio systems today have a high level of voltage but low level of current for the output signal. Only the older (legacy) sound cards may have on-card audio amplifiers.
Drivers need to be specific to the brand and model. If the drivers for an older sound scheme were not uninstalled, the OS may find similarities between the old and new audio chipset and use the wrong drivers.
Best to remove the device from the hardware/device manager page, then uninstall the drivers. Then reboot, and the OS will find the correct driver set. You likely will have to present the driver disk when doing this.
If you cannot discern if the audio output is digital or analog, borrow a pair of digital speakers and try them. If you now have audio, you know the reason.
The audio program's feature/setup menu should allow the choice of analog or digital output. If only digital output, then the programmers have not considered the probability that some users still have analog speakers!
All too common a thought, with most features.. "Everyone has the best product and results"! They should get out in the "real world" and get their pink bunny slippers dirty!
_________________
F@H.. to solve mankind's maladies.. in our lifetimes!

[Toby B.]

Ok so the board used in the system is a Narra5 board.. Of coarse providing it is indeed the original board..

http://h30434.www3.hp.com/t5/Desktop-Audio-Video-Monitors/ALC888S-Realtek-Driver-Update/td-p/1206893

Should provide a link to "try" and fix the sound...
_________________
We Help You. You Can Help Us!
Read the rules prior to posting
Tell your newsgroup or mailing list
Link to us from your pages

[GEORGIAN]

Non of the drive(r)s worked. tried 2 of it, whatever was on provided link.
_________________

[Toby B.]

[Karlsweldt]

Don't give in too soon.
You note you have "standard" 2.1 speakers. If analog, they will give good audio from almost any playback device.. such as an iPod, MP3 player or other audio output source. If they work, then the fault is with the audio output from the PC.
You checked the audio header jumper setup.
You reinstalled the drivers.
The graphics display shows audio being processed.
The OS deems "all is working properly".

Look at the audio jacks on the back panel. The color of the socket is specific to the use. Green is commonly the 'output'. Reference:
The same socket is for either analog or digital output. As noted, the program may have defaulted to digital output.. which analog speakers cannot process. Digital output is a constant level output, but is "chopped" digitally to convey audio info. Analog output is greatly varied, in sine-wave form.
Have you checked the audio settings from the speaker icon in the SysTray Box? Double-click on it, and note if the main audio slider is at least 1/2 way up the scale.. same for WAV/MP3, line in and CD settings. Also check if any tic boxes for "mute" are checked.
_________________
F@H.. to solve mankind's maladies.. in our lifetimes!