You’ve installed a wireless network card on your computer, but it just can’t find any WiFi signals—restarting several times doesn’t help, disrupting your entertainment and work? We’re sharing practical solutions to troubleshoot step by step and quickly fix this connectivity issue:
Check Physical Connections and Switches
For external USB wireless network cards, ensure a secure connection to your computer. Test with a different USB port. If there’s still no response after connection, gently clean the port with an alcohol pad to remove dust or debris that might cause poor contact.
For built-in wireless network cards, many computers (especially laptops) have a physical WiFi switch. Make sure it’s in the “On” position. Some computers require using the Fn + corresponding shortcut key to enable WiFi—only when the WiFi switch is on can the wireless network card receive signals.
Verify Network Card Driver Functionality
Malfunctioning wireless network card drivers can prevent the card from working properly. Press “Win+X” on your keyboard to open “Device Manager”, then expand “Network Adapters”. Locate the wireless network card entry and check for a yellow exclamation mark next to it. If present, right-click the card and select “Update driver”, following the on-screen prompts to complete the update.
If there’s no yellow exclamation mark, right-click the card and choose “Disable device”. Wait 30 seconds, then re-enable it to refresh the driver connection.
Troubleshoot Router and System Settings
Log in to your router’s backend management page, find the “WiFi Settings” option. Confirm that the router’s WiFi function is enabled and the WiFi name (SSID) is not hidden—this ensures the router’s WiFi is discoverable.Next, check your computer’s system settings. Press “Win+I” to access “Settings > Network & Internet > WiFi”. Ensure the computer’s WiFi switch is on and Airplane mode is off.
Restart Network Services
If your computer still can’t detect WiFi after trying the above steps, attempt to fix network issues. Type “Services” in the search box at the bottom left of your computer and open it. Find “WLAN AutoConfig” in the service list. Verify it’s in the “Running” state—if it is, right-click and select “Restart”. Try searching for WiFi again after the restart.
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