Match the symptom, then work through the safe checks.
1. What best matches what you observe?
2. Complete only the checks that are safe for you.
Show stop conditions
- The modem or router is damaged, wet, or overheating
- The connection is controlled by a workplace, school, hotel, or landlord
Likely causes
- The modem or internet service is offline
- The router has lost its WAN connection
- A captive portal, DNS, VPN, or date/time problem blocks access
- Only the affected device has stale network settings
Quick checks, in order
Test two devices and two websites
This separates a network outage from one app or device.
Check modem and router status lights
Compare them with the equipment manual.
Restart network equipment in order
Power the modem first, then the router after the modem is ready.
Forget and reconnect on one affected device
Avoid factory-resetting the router before smaller checks.
How many devices are affected?
Focus on the modem, router WAN link, provider outage, or account status.
Focus on that device’s VPN, DNS, saved network, and adapter.
Open a normal HTTP site or the network sign-in notification to complete the captive portal.
Stop and get qualified help when
- The modem or router is damaged, wet, or overheating
- The connection is controlled by a workplace, school, hotel, or landlord
Official support and model manuals
Use the full model number from the rating label. The manufacturer manual is the deciding reference when codes differ by region or product family.
Frequently asked questions
Why does Wi-Fi show full bars without internet?
Bars measure the radio link to the router, not the router’s connection to the provider.
Should I factory reset the router?
Not first. A reset deletes provider, Wi-Fi, and custom settings and may leave the network unusable.