Originally, the only sounds a computer could produce were beeps of differing pitches and frequencies. Modern computers utilize a sound card -- an audio output device -- to playback and record music and sound. Some computer manufacturers integrate the audio output device directly into the motherboard, but top-of-the-line high-definition audio devices install into an expansion slot on the board. Reinstall the audio output device and its driver to your system if Windows fails to detect the card or playback audio.
Instructions
1. Shut down the computer. Remove the power cable from the power outlet on the rear of the computer.
2. Remove the mouse and keyboard from the USB or PS/2 ports. Loosen the thumbscrews securing the monitor to the video adapter. Disconnect the monitor cable.
3. Press the "Power" button to drain the system board of electricity. Remove the screws from the back of the computer or push down the tabs located on either side of the case to loosen the cover.
4. Pull the cover off of the computer. Touch the chassis to discharge any buildup of static electricity.
5. Remove the screw securing the audio output device to the back panel. Release the tab securing the card in place.
6. Pull the card straight out of its slot. Avoid touching the surface of the card and do not touch the pins at the end.
7. Align the pins at the end of the card with the expansion slot on the system board.
8. Insert the audio device directly into the expansion slot. Push down on both edges of the card until the clip snaps in place.
9. Push on the left and right sides of the card. Neither end of the card should pop up from its slot.
10. Screw the audio card to the back panel. Reassemble the computer and press the "Power" button.
11. Boot to Windows 7. Insert into your optical drive any software that came with your audio device.
Tags: audio output, expansion slot, audio device, audio output device, audio output device, back panel