My name is Sanjeev and I work for Social Media & Community at Dell.
You can either use the Dell drivers and utilities disc which was sent along with your computer to install the network drivers or visit the dell support website by clicking the link below to download the compatible drivers for your Dell 580http://www.dell.com/support/drivers/us/en/19
Please ensure to choose the correct operating system to download the compatible drivers
You can find both the LAN and Wireless drivers under network menu
Dell Social Media outreach responder