How to Fix It When Your Wi-Fi Isn’t Working

Your Wi-Fi suddenly drops, or it is slow, or simply will not connect. It is incredibly frustrating, and often the first thought is, “Oh no, the internet is down!”

But many Wi-Fi problems actually start closer to home: with your own computer. Here at Computer Expert Adelaide, we will walk you through the exact troubleshooting steps we use in the shop.

This guide will help you find the real problem and get your internet working again.

First, Is It Your Computer or the Internet?

When your Wi-Fi stops working, it is tempting to blame your internet provider straight away. But the very first step is to work out if the problem is just with your computer, or if your entire internet connection is down.

Check Your Other Devices

• Grab your phone or another laptop in your home.
• Try to connect them to the Wi-Fi.
• See if they can access the internet (e.g., open a website like Google.com).

What This Tells You:

• If YES, other devices are working: The problem is likely specific to the computer you are having trouble with.
• If NO, other devices are not working: The problem is likely with your Wi-Fi router or your internet service itself.

If the Problem is with Your Computer (PC-Specific Wi-Fi Fixes)

If other devices in your home are working fine with the internet, then the problem is with your computer itself. Here’s what we will check next.

Restart Your PC

The simplest fix for many computer issues, including Wi-Fi glitches, is often a quick restart. This clears any temporary software problems that might be stopping your Wi-Fi from working.

Check Your Wi-Fi Adapter

• Is Wi-Fi switched on? Many laptops have a physical switch or a function key combination (e.g., Fn + F5) that turns Wi-Fi on or off. Make sure it is not accidentally disabled.
• Check Device Manager: Your Wi-Fi adapter is the part that actually connects to the internet. Sometimes, it has a problem. You can check this by opening Device Manager (press Windows Key + R, type devmgmt.msc, and press Enter). Look under “Network adapters”. If your Wi-Fi adapter has a little yellow warning triangle next to it, it means there is a driver problem. Finding those yellow triangles and updating drivers is a common computer repair task.

Update or Reinstall Drivers

If Device Manager shows a driver problem, or even if it does not, updating your Wi-Fi driver is a good step.

• Visit your laptop or computer manufacturer’s support website (e.g., Dell, HP, Lenovo).
• Search for your computer’s model number and look for the latest Wi-Fi driver downloads.
• Download and install it. If you have already installed the latest one, sometimes simply reinstalling it can fix a corrupted driver issue.

If the Problem is with Your Internet (Router & Modem Fixes)

If other devices in your home are also having trouble with the internet, the problem is most likely with your router or modem. Here’s how we usually start fixing that.

Power Cycle Your Router and Modem

This is the classic and often most effective fix for many internet problems. It gives your network equipment a complete fresh start.

1. Unplug both your router and your internet modem from their power outlets.
2. Wait 30 seconds. This ensures any leftover power completely drains.
3. Plug in the modem first. Wait for all its lights to stabilise (usually steady green), which can take a minute or two.
4. Plug in the router next. Wait for its lights to settle as well.

Check All Cables and Lights

• Cables: Make sure all Ethernet cables connected to your router and modem are securely plugged in. A loose cable can cause a complete internet outage.
• Lights: Look at the indicator lights on your modem and router.
  • Steady green lights usually mean everything is working correctly.
  • Flashing red or orange lights often mean there is a problem with your internet connection or the device itself. Check your internet provider’s website for a guide to what your specific device’s lights mean.

What to Do If Your Wi-Fi Still Isn’t Working

If you have tried all the steps we have covered, and your Wi-Fi is still struggling, the problem might be more complex. This usually means it’s time to seek expert help.

Call Your Internet Provider (ISP)

If all your devices (your computer, phone, tablet) cannot connect to the internet, and you have already power cycled your modem and router, then the issue is likely with your internet service provider. Give them a call and explain what troubleshooting you have already done.

Consider Faulty Hardware

Sometimes, your Wi-Fi adapter inside your computer, or your Wi-Fi router itself, can simply fail. Just like any other electronic device, these parts can stop working correctly over time.

Wi-Fi problems can be incredibly frustrating. If you need help diagnosing a complex network issue, replacing faulty hardware, or getting your drivers updated, Computer Expert Adelaide can provide fast, expert assistance. Give us a call today to get your internet working reliably again.