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No Audio Output Device is Installed

Up until yesterday, I had sound . I was playing a game and then the sound disappeared. A Red X appeared on the sound control. I shut down my laptop and everything started again.... then the sound stopped and the Red X appeared again. I have shut down more times than enough trying to rectify the problem to no avail.

My laptop is an HP Pavillion dv9810us running Vista as OS.
The sound card is a Conexant HD Smart Audio 211.

I have been searching to resolve this problem and some other issues that started a while back. The initial problems were the webcam and the CD/Rom drive stopped working. I got them back and they worked a few days and disappeared again. I have run MrFixit and nothing. I get the messages that the drivers are missing.
I have tried updating the drivers and redownloading... nothing seems to work

In troubleshooting, I was able to find a way to view hidden devices in Computer management. I did so.... and it shows my missing devices... webcam/ cd/rom / sound . When I click on those devices... the icons are grayed out showing they are inactive. I cannot activate them.

Before uninstalling and rebooting my laptop to see if this will reinstall the device drivers.... what am I missing and how can I get all three of these devices to be functional again? I have some online tutorials to do... but can't do them because of the 'no sound' . I am truly aggravated by this.

It appears that this is a common problem that has not been resolved by MS.
Someone please help me out.

My Computer

System One

  • Manufacturer/Model
    HP Pavillion dv9810us
    Sound Card
    Conexant HD smart Audio 221


Network Enthusiast
Vista Guru
Gold Member
uk uk_england
Have you tried a System Restore to a Point BEOFORE The problem happened?

See http://www.vistax64.com/tutorials/76905-system-restore-how.html For More Information

Also Did you Install/uninstall any New Programs and Drivers before Playing the Game and what is the Name of the Game so I can do some research

Many Thanks,

My Computer

System One

  • Manufacturer/Model
    Custom Built
    Intel Core i5 2400 @ 3.10GHz
    Foxconn H67MP-S/-V/H67MP
    8.0GB DDR3 @ 665MHz (2GBx4)
    Graphics Card(s)
    AMD HD Radeon 6870
    Sound Card
    Realtek High Definition Audio
    Monitor(s) Displays
    SMB1930NW (1440x900@60Hz)
    Screen Resolution
    Hard Drives
    977GB Seagate ST31000524AS ATA Device (SATA) + 250GB WD iSCSI attached Drive
    Novatech Night
    Dell HID-compliant mouse
    Standard PS/2 Keyboard
Yes, I have tried a system restore back to the day before the sound failed. That didn't work.
I have read everything that I possibly can read.
The only thing have done is to restore back to factory reset. I don't want to do that because I can't save anything to disc unless I go out and buy a separate storage harddrive since the CD rom is not functioning.

Last nite I performed a chkdsk which worked the first time when the webcam and cd rom were not working. This time... it did not fix any issues.

The game was on Facebook (Jungle Bricks) and nothing that I had installed or deleted myself.
I'd read that some people had problems with iTunes.. so I deleted that via my control panel.
I'm grasping at straws right now.

My Computer

System One

  • Manufacturer/Model
    HP Pavillion dv9810us
    Sound Card
    Conexant HD smart Audio 221
hi i have the same laptop as you and have all the problems you have we may have to deal with hp on this matter i am a tech ive tried every sound driver for it what seems to work is if you redue your pc to windows vista it will work for a while
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