On my brothers computer, i am having problems with my sound driver. What happens is when i run lets say Windows media PLAYER and i click on play, i get this message: "Windows Media Player cannot play the file because there is a problem with your sound device. There may not be a sound device installed on your computer, it may be in use by another PROGRAM, or it may not be functioning properly." I do have a sound card installed and its drivers, but it doesnt work when i plug my speakers into it. I just get the same message. Also all my games will not work, for EXAMPLE my Call of Duty tells me this: "166 sound files are missing or in bad format". I have uninstalled all my sound drivers and deleted it all, and then reinstalled but it just doesnt work. The motherboard i have is a BIOSTAR U8668-D version 7.8. I even downloaded the CORRECT driver from the biostar website and it did not work. I do not know what to do, can anyone help?You stated you have a sound card installed ...then you stated you re-installed the drivers for the onboard sound...

This isn't working. More Info...ok, I have a sound card installed in my pci slot, with its drivers installed, my device manager tells me that it is working properly, i also have onboard sound and i reinstalled that by downloading the drivers off the internet. The computer still does not recognize my sound files from any source on my computer, did that answer your question?No.

You can only run one or the other on most machines...

Try re-seating the sound card and double-checking all your connections.

Also check all your settings in Sounds and Multimedia to make sure nothing is muted.And if you have an add on sound card you must disable the onboard sound in the BIOS.Sometimes you need to go to your control panel,then click on 'System'
then click on 'hardware',then click on 'Device Manager'

Now double click on'Sound video and game controllers'

Choose your onboard sound and right click on it.

Now go to 'Properties'click on 'Properties' at the bottom
you should see Device usage:

Choose Do not use this device(disable)

Now, you should not have a conflict with 2 sound devices
trying to run at the same time.well i disabled my onboard sound, and made sure my sound card was correctly inserted, but i still get errors when i try to play any kind of music or run a game that has sound files.
One of the errors, as i mentioned above, states:

"Windows Media Player cannot play the file because there is a problem with your sound device. There may not be a sound device installed on your computer, it may be in use by another program, or it may not be functioning properly."

I do appreciate your help so far, and I am hopeful that eventually i can get this fixedDoes the software CD that came with the sound card have its own installation and setup routine?i just reinstalled windows, its ok now, thx for your help thoughQuote from: Brin on June 16, 2007, 12:18:40 PM

i just reinstalled windows, its ok now, thx for your help though