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修复WiFi连接问题

按照以下故障排除步骤,诊断和修复各种设备上常见的WiFi连接问题。

1

Restart your router and modem

Unplug both for 30 seconds. Plug in the modem first, wait 2 minutes, then plug in the router. Wait 1 minute before testing.

2

Forget and reconnect to the network

Go to WiFi settings, forget the network, then reconnect by entering the password again. This clears corrupted connection data.

3

Check for driver updates

Windows: Device Manager > Network adapters > Update driver. Mac: System Preferences > Software Update.

4

Disable power saving for WiFi

Windows: Device Manager > WiFi adapter > Properties > Power Management > Uncheck 'Allow the computer to turn off this device'.

5

Change DNS servers

Set DNS to 8.8.8.8 / 8.8.4.4 (Google) or 1.1.1.1 / 1.0.0.1 (Cloudflare) in network adapter settings.

6

Reset network settings

Windows: Settings > Network & Internet > Network reset. Mac: Delete WiFi from System Preferences and re-add.

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常见问题

为什么WiFi总是断开?

检查驱动更新,禁用WiFi适配器的省电模式,缩短与路由器的距离,并检查是否与相邻网络存在信道拥塞。

为什么WiFi已连接但无法上网?

尝试:重启路由器/调制解调器,刷新DNS(ipconfig /flushdns),检查其他设备是否正常,确认运营商服务状态。

如何修复WiFi认证错误?

忘记该网络并重新连接,核实密码,重启路由器,并检查路由器是否启用了MAC过滤。

为什么WiFi只在某一台设备上很慢?

更新WiFi驱动程序,检查后台下载任务,清除DNS缓存,并确认设备支持路由器的WiFi标准(WiFi 5/6)。