Computer Can't Find Wi-Fi - How To Fix Connectivity Problems

Your computer can’t find Wi-Fi? I’ll show you how to resolve this.

This issue can have multiple causes, including software glitches, outdated or corrupted drivers, incorrect network settings, or hardware malfunctions. Fortunately, this guide covers all the solutions.

所以，讓我們開始吧！

快速修復

Start with these steps first:

• 重新啟動 Wi-Fi 路由器: Power cycle your router by turning it off for 10 seconds, then turning it back on to refresh the connection.
• Ensure your Wi-Fi is turned on: Double-check that your router is plugged into power and working.
• 重新啟動您的電腦: Tap the Start menu > Power > Restart.
• Try using an Ethernet cable: Connect your computer directly to the router with an Ethernet cable to bypass Wi-Fi issues and restore internet access.
• Turn on the Wi-Fi button on your computer: Some computers have a physical button or switch that you have to turn on.

Enable Wi-Fi Service

First, make sure that you haven’t turned off the Wi-Fi feature by mistake. Follow the steps below:

1. 按 Windows鍵+ I 打開 設定. 
2. 敲打 網絡與互聯網 > 高級網絡設置。

3. Make sure the Wi-Fi button reads “Disable.” If not, tap “Enable.”

Turn on the WLAN AutoConfig Service

WLAN AutoConfig is a crucial Windows service that manages your computer’s wireless networks. If this service is turned off or not functioning properly, do this:

1. 媒體推薦 的Windows + R 打開“運行”對話框。 類型 SERVICES.MSC 並擊中 Enter.

2. 向下滾動到 WLAN AutoConfig in the Services window, double-click it, and set the “啟動類型” 至 Automatic 自動錶.

3. If the service isn’t running, right-click on it and tap 開始.

4. 點擊 申請 進而 OK 保存設置。

更新網絡驅動程序

An outdated or corrupted network driver is one of the most common reasons why your computer might not be able to find Wi-Fi networks. Here’s how to 更新它:

1. 用鼠標右鍵單擊 開始 菜單，然後選擇 “設備管理器”.

2. 展開 網絡適配器 section. Right-click on your Wi-Fi adapter and select 更新驅動程序.

3. 選擇 自動搜索驅動程序. Windows will look for the latest ones online.

或者，你可以 使用 PC HelpSoft 驅動程序更新程序. This tool automatically scans and updates your drivers, streamlining the process and saving you time.

After updating, restart your computer and check if Wi-Fi networks are visible.

Run the Internet Connections Troubleshooter

Windows has a built-in troubleshooter that can automatically detect and resolve many common network issues. Follow the steps below:

1. Press the Windows Key + I to open 設定. 
2. 滾動並點擊 疑難解答.

3. 選擇 Other trouble-shooters.

4. 敲打 運行 旁邊的 網絡和Internet“ button. Follow the prompts to let Windows diagnose and fix potential problems with your connection.

重置 TCP/IP 堆棧

Sometimes, network settings can become corrupted, preventing your computer from properly detecting Wi-Fi networks. Resetting the TCP/IP stack often resolves these issues. Here’s how:

1. 按 Windows 鍵 + X， 然後點擊 終端（管理員）。

2. 類型 netsh int ip reset 並擊中 Enter.

After the command completes, restart your computer to reset the TCP/IP stack.

重置網絡設置

If you’re still having trouble connecting to Wi-Fi, try restoring all networking components to their default settings. Follow the steps below:

1. 按 Windows鍵+ I 打開 設定.
2. 造訪 網絡與互聯網 on the left sidebar, scroll down, and click on 高級網絡設置.

3. 下 更多設置， 選擇 網絡重置.

4. 點擊 立即重置 並確認您的選擇。

After the reset, confirm if you can find Wi-Fi.

Check Wi-Fi Adapter Power Settings

Sometimes, your Wi-Fi adapter may be set to power-saving mode, which can cause it to stop scanning for available networks. Disabling power-saving features might help:

1. 已提交 “設備管理器” again (right-click Start > “設備管理器”).
2. 下 網絡適配器, right-click your Wi-Fi adapter and select 氟化鈉性能.

3. 點擊 電源管理應用 標籤。 取消選中 “Allow the computer to turn off this device to save power” 框，然後單擊 OK 保存更改。

This ensures your Wi-Fi adapter is always active and can detect available networks.

執行系統還原

If none of the above solutions work and the issue started recently, try restoring your system to a previous point in time when the Wi-Fi connection was working. It’s helpful if a recent update or software installation caused the problem. Follow the steps below:

1. 類型 “建立一個還原點，” on the search bar and tap 已提交.

2. 點擊 “系統還原”.

3. 選擇還原點 並點擊 下一步。

4. 點擊 完 開始恢復過程。

After restoring your system, check if your network is visible and working again.

So, now you know what to do if your computer can’t find Wi-Fi. Start with the simple fixes before moving on to more advanced solutions. These steps should help you get your connection back up and running.

另外，了解如何解決諸如 no Wi-Fi on a new laptop, a malfunctioning adapter， 或者 Wi-Fi constantly disconnecting 在Windows 11。