Short answer: When one device works, the internet line and router are probably active. The laptop may have a saved password, IP configuration, driver, VPN, or frequency-band problem.
This guide uses low-risk checks first, keeps account and personal data protected, and helps you identify whether the problem belongs to the device, app, network, or service.
What usually causes this problem
Forget and reconnect to the network on the laptop, restart its Wi-Fi adapter, and test whether the problem follows the laptop to another network. Common causes include:
- Saved network settings are corrupted.
- A VPN or proxy intercepts traffic.
- The adapter driver stopped responding.
- The router limits or blocks that device.
Change one thing at a time. If several settings are changed together, it becomes difficult to know which step actually solved the problem or created a new one.
Fix it in the safest order
- Turn Wi-Fi off and on. Complete the check, then test the original symptom before moving to the next step.
- Forget the network and enter the password again. Complete the check, then test the original symptom before moving to the next step.
- Restart the laptop and router once. Complete the check, then test the original symptom before moving to the next step.
- Disable VPN or proxy temporarily. Complete the check, then test the original symptom before moving to the next step.
- Run the built-in network troubleshooter. Complete the check, then test the original symptom before moving to the next step.
- Test the laptop on a phone hotspot. Complete the check, then test the original symptom before moving to the next step.
Protect your data while troubleshooting
Do not factory-reset the router while other devices are connected normally. Back up irreplaceable files before clearing storage, resetting settings, removing an account, reinstalling an app, or formatting a drive. Use official apps and support pages rather than download links sent through pop-ups, comments, or unexpected messages.
For users in the Philippines, also check whether the issue changes between home Wi-Fi and mobile data. Prepaid balance, carrier maintenance, local power interruptions, and ISP outages can resemble a device problem. Avoid repeated resets when the service itself is unavailable.
How to confirm the fix
The laptop reconnects after a restart and can open several secure websites without using a temporary workaround. Repeat the test after one normal restart. A workaround that succeeds once but fails immediately after reboot is not a complete fix.
When to get official help
Contact the laptop maker if the adapter disappears or fails on every network. Before contacting support, note the device model, operating-system version, app version, exact error text, time of failure, and the steps already tested. Never send a password, one-time code, recovery phrase, or full payment-card number.
