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You could look for it in device manager.
Make sure that the device drivers are installed. If they are, try removing them, and reinstalling. Also check to make sure that the card is seated properly. If all else fails, time to buy a new card. They are very cheap
Answer Check speakers by pluging in a headphone, check device manager, enable, upgrade drivers, delete and reinstall check in controlpanel /audio/system sounds. Your sound card is probably bad, OR your speakers may be connected ot the computer improperly. You might need to enable the device in the Hardware Manager (XP) or Device Manager (98). Check to see if there is more than one version of the device installed. Also, make sure that you have the speakers plugged into the correct jack. I had that problem too, and my problem was the sound card itself, which was buggy. Sound cards aren't that expensive to replace, I wouldn't think.
You should check to see if a driver for your sound card has been installed; XP may not have one for your card. You can check this by right-clicking My Computer, selecting Properties, going to the Hardware tab, and launching the Device Manager. If any devices have a yellow question mark, then they do not have a driver installed. You need to find a driver for the card, either on the computer manufacturer's site, or the producer of the sound card (ie. Yamaha, Creative, Intel, etc...).
Check if the required specifications match what your computer has installed.
Check to see if your sound card is working properly and compatible with your computer. Go to My Computer, click Properties and then Device Manager and there will be a yellow sign to show if sound card isn't working. Check to see if your sound card is working properly and compatible with your computer. Go to My Computer, click Properties and then Device Manager and there will be a yellow sign to show if sound card isn't working.
You need to install the drivers for the sound card your computer has installed in it.
Device Manager
No. An I/O device can be either internal (installed inside the computer case) or external (installed outside the case). Internal: network card, sound card, video capture card, and video card. External: keyboard, monitor, mouse, printer, scanner, digital camera, and flash drives. pg 392, seventh edition
A discrete device/component is not installed directly on the motherboard. See Discrete Graphics Card.
roll back the driver
Turn on system and look for (the info bubble) new audio hardware installed in task tray! Hardware class - Open Device Manager, select the device, right-click it, and select Properties on the shortcut menu.