Wi-Fi Signal Missing? Here’s What to Do

💡 Quick fix: Unplug all cables from both ends and power off all devices for five minutes. Then reconnect all cables securely and power everything back on. In many cases, this simple step resolves most issues.

If your device cannot detect any Wi-Fi signal at all, first check whether the indicator light on the router is on (see Figure 1).

【Figure 1】

When the indicator light is off:

This may be caused by one of the following reasons:

• Power supply issue: Check whether the power outlet is working. You can test it by plugging in another electrical device.
• Connection issue: If the power outlet works but the router indicator is still off, carefully check the AC and DC power connectors and make sure both ends of the power adapter are firmly plugged in.
• Router malfunction: If the indicator light still does not turn on, the router may be faulty. Contact the router manufacturer for repair or replacement.

When the indicator light is on:

If the Wi-Fi signal still cannot be detected, you can troubleshoot the issue based on the following situations:

• Wi-Fi signal interference or obstruction: Devices such as microwave ovens, cordless phones, and wireless mice or keyboards placed too close to the router may interfere with the Wi-Fi signal. In addition, long distances, walls, or other physical obstacles between the router and your device can significantly weaken the signal, making the Wi-Fi network difficult to detect (see Figure 2).
• Only some devices cannot find Wi-Fi: If only certain devices such as phones, computers, or TVs cannot detect the Wi-Fi network, the issue may be related to the device itself. Try restarting the affected device or checking its wireless settings.
• All devices cannot find Wi-Fi: Power off the router for five minutes, then restart it and check again. If the problem persists, you may need to restore the router to its factory settings and reconfigure it.
• Router failure: If none of the above steps work and the Wi-Fi signal is still missing, the router itself may be malfunctioning. In this case, contact the router manufacturer or consider replacing the device.

【Figure 2】

⚠️ Important warning: Restoring a router to factory settings will erase all existing configuration data. If you are not familiar with router settings, do not attempt this lightly. Consider asking a qualified technician for assistance.