takid1412,  Download and install in this exact order or use the drivers disk that came with the system  ST Microelectronics Free Fall Sensor Driver  Intel Chipset Driver  Intel Management Engine Interface Driver  Intel USB 3.0 eXtensible Host Controller Driver  Realtek RTS5179GR USB2.0 Card Reader Driver  Then download and install Atheros AR8161/8165/8162/8166/8168 Ethernet Controller Driver  Go to Dell Warranty Status enter your service tag, then click on original configuration. Look and see which adapter you have installed. The go to  Drivers & Downloads enter your service tag, select your operating system, click on network and downlaod and install the drivers for your adapter.  Then download and install Dell Quickset Application  Places to look to see if your Connection is enabled   Rick
Hi, my Vostro 3460: core i5 -  3210M 4G RAM nVidia 630M windows 7 64bits sp1 All drives are from dell.com  And if i run a program use nVdia vga like Bluestack (i tested many program), sometimes, my Lan card disappear from device manage. I must restart to resolve. Maybe one time, maybe many times. Does my mainboard have an error or something else? Thank you and sorry if my english is so bad.
Vostro 3460 Lan problem