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Shut down the computer.
Disconnect all peripherals from the computer.
Remove the cover of the chassis and lay computer on its side if it is a tower.
Remove the back panel, if necessary.
Locate the existing sound card if there is one already installed. If it is screwed in on the side of the slot hole, unscrew it and pull the card out firmly.
8If the computer doesn't already have a sound card, find an open slot.
9Knock out or unscrew the metal plate on the card's slot holder on the back panel.
Step10Insert the sound card gently but firmly into the slot. Rock it into position if necessary, but don't force it. Don't touch any connectors on the card.
Step11Connect cables from the CD-ROM drive to the sound card.
Step12Replace the back panel and any removed screws. Screw sound card into slot holder if it has a screw hole.
Step13Reconnect monitor, keyboard, and mouse. Connect speakers to the sound card's ports.
Step14Turn on the speakers and restart the computer.
Step15If Windows detects the sound card upon startup, follow instructions to install the card's driver and additional software. If Windows doesn't detect sound card, manually complete the installation using the Add New Hardware control panel.
Step16Play music CD to test sound card.
Step17Shut down computer.
Step18Replace cover of computer. Reboot computer.
You may have to remove the sound card and copy any numbers or letters on the card. Then google until you find the right driver. If the sound card is the card that came with your computer then go to HP.com compaq/support. mysleuth please rate me.
If you find more info. about your card go link: http://members.driverguide.com/index.php?action=dosearch&qm0=Altec+Lansing+speaker&qa5=19&dp=3&sm=h&jmd=and&si=971d3f0bb5f5ec3c035b106a83c02d29&st=1237101401
Hi Sammantha78, I had a similar problem with my computer and I went and bought new sound card and installed it and I still had no sound. I then went and bought a new set of speakers and now i got sound. I suggest you test another set of speakers on your computer to see if it’s not your Altec Lansing speakers that is not working. Sincerely, Agent Xiong