text: If you don't know what to do in the BIOS, you really shouldn't be in there. You can cause your computer to stop working completely by changing something in there.\n\nWhat you are looking for, IF the card is built-in, will be in the Integrated Devices list (may be called something else. Depends on the motherboard manufacturer).\n\nIf you get lost or make things worse, just set your BIOS to its default, and the command for that is usually listed at the bottom of the BIOS screen. The default is what you need, and the NIC is NEVER disabled by default.\n\nIf you NIC (network interface card or ethernet card) is disabled, then it is almost certainly disabled in Windows (software). Go to Start -> Control Panel -> Network Devices (or right-click Properties of Networking). Look for a disabled Local Area Connection in here, then right-click and select Enable.\n\nIf that still doesn't work, then there's something else wrong. It's either net NIC itself or a problem with your router or ISP.