Lost my audio

what is the make and model of your computer?

Go to Device manager and look for Sound, Video and Game Controllers. You will probably see a yellow caution sign beside the device. If so you will need to install the appropriate driver for your hardware.

Been there done all of the above.
Once again Control Panel --> Sounds and Audio Devices Properties:
         Volume     "No Audio Device"     (so it is not the speakers this was working until the new OS reinstall)
         Audio       "Default device: No Playback Devices"
         Hardware  "Realtek High DefinitionAudio
                      Device Properties
                                Manufactuer: Relrek
                               Location: Location 65535 (Internal High Definition Audio Bus)
                               Device Status: "THIS DEVICE IS WORKING PROPERLY"
         Audio Codecs
                    Device Properties
                                Manufacturer: (Standard system devices)
                                Location: Unknown
                                Device Status: "THIS DEVICE IS WORKING PROPERLY"
         Legacy Audio Drivers
                    Device Properties
                                Manufacturer: (Standard system devices)
                                Location: Unknown
                                Device Status: "THIS DEVICE IS WORKING PROPERLY"
---------------------------------------------------------------------------------------------------------------------------
I have gone to emachines and downloaded the "latest" driver.

System Properties --> Hardware --> Device Manager --> Sound, ... --> Audio Codecs, Legacy Audio Drivers and REaltek High Definition Audio ALL show "DEVICE IS WORKING PROPERLY"
(I 'm not yelling just trying to emphasise that the system says everything is working properly).

emachine T6540 A64X2 3800 1.5gb ram (don't ask) 500gb HD total.
Sounds were working until a re-install of OS Windows Media (XP-Pro SP2).

Of course I bought this computer at CompUSA with a extended 3 year warranty last January
(yeah right good buy).

Thanks for the help so far.
Ralph

If you click on the sounds tab in Control Panel --> Sounds and Audio Devices Properties, where the program events are, select one of the events and see if the little test button (right pointing arrow) where you can preview the sound seems to work, or is it greyed out.

Have you tried un-installing the device in device manager then using add hardware wizard to reinstall it?

Whoa, what the heck is a knoppix? It certainly is a large ISO is it a bootable image?
This is interesting thanks everybody else I have (had) tried "all" of the normal things to try unsuccesssfully that is why I turned to the "experts" this cd test from nobus is what I was looking for.
i,e, something beyond the normal update dirve check your settings make sure your speakers are plugged in thing. I had tried all of that before coming here.
But thank you for trying.
Ralph

nobus, what do you mean "if still no sound, the hard is bad"? What "hard" are you speaking of?

Of course re: "if still warrenty, ask for a warrenty repair / replacement".
That is a "local" (USA) joke. As I have stated I bought this computer at a chain called CompUSA store
in January of 2007 with a extended 3 year warrenty. Of course this chain has gone out of business
so all store warranties are gone especially any extended warrenties. Anybody who bought from CompUSA (which was a national chanin) is screwed regarding warranty work.

I suspect the knoppix test will work and I will end up rere-indstalling the OS.
Reinstalling the OS is a four hour process unless I can remember the OSM install key sequence
I think it was Cntrl-F10 but I am not sure. It's been a while since I did the re-install. This Media edition of Windows XP (eMachines version) installs 96 accessory programs during the re-install, that is whay it takes four hours.

I'll burn a CD to test the knoppix ISO (it is still downloading) I cannot wait to see what it is.

I probable have a bootable Linux CD around thatI could also test with.

Thanks again everbody you have been most helpful in your responses.
Ralph

Have you checked your event viewer for anything related to the problem?

Also, does anything abnormal happen when you try uninstalling the drivers and letting Windows reinstall them? Also, this doesn't really have the same symptoms but have you looked at:
http://www.nforcershq.com/forum/no-sound-from-working-correctly-hardware-solved-vt66902.html
?

You'll love knoppix, it's a complete linux distro the boots and runs off the CD

When I install the Realtek driver, downloaded from eMachines, I get Error about installing a 32 bit DLL,
this computer is 64 bit not 32. Possible this is notthe correct driver.

Same problem with knoppix, is that a 64bit build?
It could not run for me. It died with a could not Find Server X message.

Ralph

i'll try to answer your questions :
-Knoppix is a free OS like windows, and uses completely different software and drivers, but it can access all windows HD's.  When you start it up, it runs from cd, so leaves your HD untouched. You'll hear the startup sound, and can play any other sound too. Since it is100% different, if you hear NO sound, you can be sure your hardware is bad, since it does NOT work on 2 different OS'es. general link :
http://www.knoppix.org/
-as for the warranty, i think emachines should still cover the warranty to some extent, but i may be wrong there
another live linux cd would do the same

-

Is it a sound card or built in

I have been away for the week. As there has not been any further activities I gues we have covered all of the normal "settings" options.

I will try re-installing the OS, this will start a new thread about OS image files. It would be nice to take a snapshot of just the OS and have a restorable image.

Another new thread not just because of the sound problem but also there is a apparent bug on the motherboard of this eMachines (T6540 A64X2 3800) relating to trying to use 2gbs of memory. So I am
thinking about just buying a new motherboard. I need some serious help with this so please look for a new thread.

Thanks eveyone for your help, anyone of you would have been correct in a "normal" situation I really appreciate all of the good fed back and suggestions.

Thanks,
Ralph

>>   so please look for a new thread  <<  then post the link to that Q here

Here is a new thread about a new motherboard.
https://www.experts-exchange.com/questions/23041611/Suggestions-for-a-new-motherboard.html

Ralph

I install the 64bit version of XP Pro and after a update install of a super bus driver the audio device ws detected and I was able to install the RealTek drivers.

Windows MEDIA (XP) really sucks glad to have a alternate course now I  am having to find 64bit drivers.