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Is It My Wi-Fi or My Computer?

When the internet stops working, the first question is always the same: is it my Wi-Fi or my computer? Before you reboot everything or call your provider, you can answer that question yourself in a few minutes. This guide shows you simple, reliable ways to tell whether the problem is the network or your specific device — so you fix the right thing the first time.

Start with one quick test: try another device

The fastest way to tell the difference is to check a second device on the same Wi-Fi.

  • Pick up your phone, a tablet, or another computer.
  • Make sure it's on the same Wi-Fi network, not mobile data.
  • Try loading a couple of websites or apps.

What the result tells you:

  • Other devices work fine, but one doesn't → the problem is almost certainly that one device, not the network.
  • Nothing works on any device → the problem is the network, router, or your internet provider.

This single test rules out half the possibilities in under a minute.

Is it one website, or everything?

If it's just your computer struggling, narrow it down further.

  1. Try three or four different websites (for example a news site, a search engine, and a streaming service).
  2. If only one site is down, the problem is that website — not your Wi-Fi or your computer.
  3. If everything is slow or failing, keep going below.

A site being down for everyone is common and has nothing to do with you. You can confirm by checking the same site on your phone over mobile data.

Check your Wi-Fi signal

A weak signal looks a lot like a broken computer, but it's really a network reach problem.

  • Look at the Wi-Fi icon. One or two bars means you're too far from the router or there's interference.
  • Walk closer to the router and test again.
  • Thick walls, microwaves, and other networks nearby can all weaken the signal.

If moving closer fixes things, you have a coverage problem, not a device problem. A Wi-Fi extender or moving the router higher and more central can help.

Restart in the right order

Restarting fixes a surprising number of issues, but order matters.

  1. Restart your computer first. This is the quickest test and clears most device-side glitches.
  2. If that doesn't help, restart your router (and modem, if separate). Unplug it, wait 30 seconds, plug it back in, and give it two full minutes to come back online.
  3. Test again after each step so you know which one actually fixed it.

If restarting the computer fixes it, it was your machine. If only restarting the router fixes it, it was the network.

Run a speed test

If you're connected but everything feels slow, measure it.

  • Run a speed test on the troubled computer.
  • Then run the same test on another device on the same Wi-Fi.

Compare the numbers:

  • Both devices are slow → the network or your internet plan is the bottleneck.
  • Only your computer is slow → something on that machine is the cause — a background download, too many open tabs, an update installing, or a driver issue.

If only one device is dragging, our guide on why your internet is slow on only one device digs into the specific causes and fixes.

Rule out your computer's own health

Sometimes the network is perfect and the computer is quietly struggling. Things to check:

  • CPU and memory. Open your task manager (Windows) or Activity Monitor (Mac). If the processor or memory is maxed out, the computer — not the internet — is what feels slow.
  • Updates installing in the background. These can eat your whole connection without any visible window.
  • Wi-Fi adapter glitches. If your machine keeps dropping the connection while other devices stay online, the network card or its driver may be the issue.

Tip

If your phone works perfectly on the same Wi-Fi but your laptop won't connect at all, that points squarely at the laptop. See internet works on my phone but not my laptop for the targeted fixes.

The fast way: let Acutis Go answer it for you

Doing all of this manually works, but it takes time and a bit of know-how. Acutis Go does the whole diagnosis for you and hands you a plain-English answer.

It's a free, tiny (~7 MB) app that runs quietly on your computer and continuously answers one question: is it the network, or your machine? It checks your internet, latency, Wi-Fi signal, DNS, gateway, a built-in speed test, and your computer's own health — then gives you a clear verdict with a confidence score. It's observe-only, so it never changes a single setting on your computer or network.

It also generates a six-character support code. Instead of reading IP and MAC addresses to whoever is helping you, you just read out the code — the end of the worst support call.

Install free at https://get.acutisgo.com and stop guessing whether it's the Wi-Fi or the computer.