Key Takeaways
- Most home internet outages are caused by simple hardware or settings issues you can fix yourself.
- Working through checks in order — from physical connections to device settings — saves time.
- A full modem and router restart cycle resolves a large share of connectivity complaints.
- Isolating the problem to one device or the whole network determines your next step.
- If all checks pass and the outage persists, you'll have useful information ready when you do call your ISP.
Summary
18 items · 10–30 minutes
Why Run Through This Before Calling Support?
Calling your internet service provider (ISP) can mean long hold times, scripted troubleshooting scripts you've already tried, and occasionally a technician visit scheduled days away. The good news: a significant portion of reported outages turn out to be local hardware faults, loose cables, or device-level settings — none of which require ISP involvement.
This checklist walks you through the most reliable self-diagnostic steps in logical order, from the physical layer outward. If you reach the end without restoring service, you'll at least know the problem is on your ISP's side — and you'll have concrete details to share with their support team. For a broader look at your home network's health, see our Home Network Audit Checklist.
Don't Skip the Full Restart Cycle
Simply pressing a router's reset button or toggling it off and on too quickly rarely clears the issue. A proper restart means unplugging from the wall, waiting at least 60 seconds for the modem and 30 seconds for the router, then restoring power in order: modem first, router second. Rushing this step is one of the most common reasons self-troubleshooting fails.
What You'll Need
You don't need specialist equipment for most of these checks. Gather the following before you start:
A smartphone with mobile data
Check ISP outage pages, look up error messages, and test whether the problem is isolated to your home network.
A spare Ethernet cable
Bypass Wi-Fi to determine whether the fault is wireless or affects the whole network.
Your ISP account login credentials
Access your ISP's status page and account portal to rule out outages or billing issues.
A flashlight or phone torch
Inspect cables behind furniture and in poorly lit areas for physical damage.
Once you have these to hand, work through the checklist groups below in sequence. Skipping ahead often means missing the simplest fix.
Running the Checklist
Follow the groups below in order. Each group targets a distinct layer of your home network — physical, hardware, network settings, and device-level. Resolve any failures you find before moving to the next group.
Physical Connections
Modem & Router Restart
Isolate the Scope of the Problem
Device & Software Checks
ISP-Side Verification
If you encounter an unfamiliar error message during these checks — such as DNS_PROBE_FINISHED_NXDOMAIN or DHCP timeout — our Network Errors Decoded reference guide explains what each message means and where to start fixing it. For a more in-depth walkthrough covering every layer from router to individual device, refer to our complete home network troubleshooting guide.
Avoid a Full Factory Reset Unless Instructed
Many routers have a small recessed reset button that, when held for 10 or more seconds, wipes all your custom settings — including your Wi-Fi name, password, and any port-forwarding rules. This is different from a simple power cycle. Do not press this button during routine troubleshooting unless your ISP's support team specifically instructs you to do so, as it can leave your network in an unconfigured state.
When to Actually Call Your ISP
After completing all checks above, try loading several different websites on multiple devices. If the outage affects every device on your network and all hardware looks healthy, the fault is most likely upstream — either at your ISP's infrastructure or between their equipment and your modem.
Before you call, note down: your modem's status lights, the exact error messages you saw, how long the issue has been occurring, and whether a specific event (storm, power cut, router move) preceded it. This information speeds up the support process significantly and may qualify you for a faster escalation path.
For device-specific problems that survive a network fix — such as a phone or tablet that still can't connect even when other devices work — the Phone & Tablet Fixes hub and Computer Problem Solving hub have targeted guidance. You may also want to review your router's security posture once connectivity is restored using our Home Network Security Audit checklist.