Satellite A300 - No Audio Device Installed

Hey,
Over the last week or so I've been having trouble with my audio.
The first incident occurred whilst I was browsing the internet, all of a sudden some error popped up and turned off my sound. When I checked for audio devices it said there where none installed and when I checked the device manager there were also none installed. I then uninstalled the driver/software from my computer and reinstalled them, but still the drivers were not recognized. Instead there was only a HDMI Output driver which would say it was playing sound, but none was coming out of my speakers.
Then I had just given up hope, and was playing a video (without sound) when all of a sudden sound began playing out of the speakers and all the sound drivers were recognized.
Then the same incident as the first happened again, and now I still can't fix it.
Also errors keep coming up saying 'Soundchanger.exe" is not working.
Any help would be great! I have uninstalled and reinstalled all the correct drivers and still used system restore but still the sound won't work.

Hi
Did this happen with the Windows Vista preinstalled by Toshiba?
If yes then I would recommend restoring the OS using the Toshiba HDD image or the recovery disk.
I think this is necessary if the sound driver installation or update didnt help.
The new OS installation would be also helpful to check if this is a hardware or only software issue.
Usually after new OS installation the sound should work correctly. But if you this sound issue will still appear then a hardware problem could be the reason for that like mentioned by Akuma.
I had some sound issues but only after the _Win XP_ installation. Some MS patches which are a part of SP3 were no installed and therefore the sound didnt function.
So I removed the sound driver, installed SP3 and after new reboot I installed the SP3 and the sound worked again

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This question was solved.
View Solution.

Hi,
My suggetion: Totally uninstall it, reboot the machine and install it again. You can uninstall it from
   Control panel > Device Manager
   It should be under Sound ...
   Right click it & Uninstall
Regards,
BH
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I was listening to music today when all the computer no longer played with the headphones. I would put different headphones in the jack and it would only play on the computer speakers. Then the computer froze and I had to reboot it. Now under the sound file it says there are no audio devices installed. What should I do?
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HI,
EHanrehan, you have a loptop DV6700 hece please post in the Laptop section.
Hi,
WError, if you are getting Error Code - 10, then it represents that the drivers are not installed correctly.
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Good Luck
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**Click on “Kudos” Star if you think this reply helped** Or Mark it as "Solved" if issue got fixed.

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Note:
If you have HP Support Assistant installed on the computer(The Blue Question Mark) then open it ==> Complete all pending Updates & Tuneups==> Restart and Check. It may solve your problem
Although I am an HP employee, I am speaking for myself and not for HP.
**Click on “Kudos” Star if you think this reply helped** Or Mark it as "Solved" if issue got fixed.

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Hello BFede93, welcome to the HP Forums.
I see that you're getting a message that no audio device is found. I will try to assist you with this.
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Hello
> but not the connectors.
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Ok I will try to be as thorough as possible because I want to fix this problem and I hope somebody can help me.
So A few days ago There was an update for my audio driver so I accepted.
But after this update my sound worked but on next use the sound was gone.
So......I used system restore but no help the same thing happened
I went to the hp website to look up my audio driver for my model which was conexant audio 221
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hi, im also exp. the same <text deleted> problem! i also get that error message "quick touch on screen display has stopped working" , lower right corner(volume icon)says"no audio output device is installed", no "video,sound & controllers" on device manager, i had tried reformatting, multible virus\malware scanners, ive tried multible registry cleaners, DL updated drivers, bios, audio(can't install,no audio device),and ive tried all of these conbinations with or without the windows updates, besides the audio prob, the cd/dvd icon's gone frm My comp, cant use the mic, and or webcam, SMART is detecting a hard disk failure now(iminent 2 fail) <text deleted> !,lol... ps HP or Microsoft really needs 2 take this into consideration, im tired of this, i will never buy another HP ever!! or windows!, **bleep** it if i have 2 spent another thousand dollars on a Mac,atleast ill get a much decent,"working" pc, that wontstress the **bleep** out of my mind!
Message Edited by WendyM on 08-09-2009 07:35 PM

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Hi,
You will need to identify your CPU and chipset. CPU-z is a free and safe utility that can do that for you.
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Post you results here in your thread so others rsearching for the same information can benefit from it.
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erico
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2015 Microsoft MVP - Windows Experience Consumer

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Make it easier for other people to find solutions, by marking my answer "Accept as Solution" if it solves your issue

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Hello,
I bought a TOSHIBA laptop which has the following model: Satellite-A300-23E (Operational system is Windows Vista Home Premium)
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http://support1.toshiba-tro.de/tedd-files2/0/webcam-en-20090422172230.zip
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Satellite A300 - No Audio Device Installed

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