找一下网卡的驱动

Toshiba support website should have the NIC driver. Note: These days many chipset integrates the MAC. The driver could be in the chipset driver, e.g., Nvidia nforce driver includes support for NIC. Wireless NIC typically comes with a seperate driver.

If not, once you find out the model number of NIC, go to manufacturer's website to download the driver. You can use Everest to find out the model number. 置顶的贴子有链接.