29Add-in cardsThe computer does not recognize an add-incard• Shut down and restart your computer.• Make sure that you have installed therequired software. For more information,see the documentation that came withyour add-in card.AudioSee “Sound” on page 46.CD or DVD drivesSee “Optical disc drives” on page 42.DVD drives• See “CD or DVD drives” on page 29.EthernetYou cannot see the other computers on yournetwork• Make sure that your Ethernet cable isplugged into the Ethernet jack on yourcomputer. Make sure that the other endis plugged into a router.• Make sure that all computers areplugged into a powered electrical outletand turned on.• Make sure that the router is plugged intoa powered electrical outlet and turnedon. Most routers have lights that indicatethey are working. For more information,see the documentation that came withyour router.• Make sure that all computers on yournetwork have the same workgroupname.
