求救！！“Wi-fi Doesn't have a valid IP configuration"

Gigalynk

Remove your wifi connection

Start Network and Sharing Center.
In the Tasks pane, click Manage wireless networks.
Right-click the connection you want to delete, and then click Remove network.
In the Manage Wireless Networks - Warning dialog box, click OK.

Reboot router, connect your computer to your wifi, rekey-in password.
If still cannot, reset your modem.

This happen could be IP conflict where your router might not able to assign DHCP to connection devices.

ranth

记忆的碎片 发表于 2016-12-9 10:48 PM
我已經uninstall了，要怎麼install 回去？

你可以尝试用windows的driver（之前安装过，也许Windows还有driver数据）再次安装。
不然，你就必须确认你的laptop model，wifi adapter的型号这些上网寻找下载driver安装。