How to Fix a Slow Internet Connection: A Troubleshooting Checklist

A slow connection can come from any one of several unrelated causes — your Wi-Fi, your router, background usage, network congestion, or your ISP itself. Working through them in a sensible order, from quickest-to-check to most involved, gets to the real cause faster than guessing.

1. Run a Speed Test First

Before changing anything, get a real baseline number. Without one, there's nothing to compare your fixes against — run a test and note the download, upload, ping, and jitter figures.

2. Restart Your Router and Modem

The classic fix works because it genuinely clears accumulated memory usage and stuck connection state that builds up over days or weeks of continuous uptime. Power both off, wait about 30 seconds, then power the modem on first, followed by the router.

3. Test With a Wired Connection

Plug a laptop directly into the router with an Ethernet cable and test again. If wired speed is dramatically better than Wi-Fi, the problem is your wireless setup, not your underlying connection — see our Wi-Fi vs. Ethernet guide for what to check next.

4. Check for Background Bandwidth Users

Software updates, cloud backups, and streaming devices left running elsewhere in the house can all consume significant bandwidth without an obvious sign. Pause or close what you can and test again.

5. Check Router Placement and Wi-Fi Band

A router tucked in a cabinet, behind a TV, or on a different floor from where you actually use the internet loses significant range. Move it somewhere central and elevated if possible, and connect nearby devices to 5GHz or 6GHz instead of 2.4GHz where signal strength allows — details in the Wi-Fi guide.

6. Test at a Different Time of Day

If the slowness is worse in the evening, it may be peak-hour congestion rather than anything fixable on your end — see why speed fluctuates throughout the day.

7. Rule Out a VPN

If you normally run a VPN, test with it temporarily disabled. Encryption overhead and server routing distance can both reduce speed — see how VPNs affect speed tests.

8. Compare Against What You're Actually Paying For

Check your result against your plan's advertised speed and against what your actual usage needs — a connection can be "slow" relative to the plan you're paying for while still being genuinely enough for what you do.

9. Contact Your ISP With Specifics

If none of the above explains it, you're now equipped with exactly what a support call needs: wired vs. Wi-Fi results, times of day tested, and how far below your plan's advertised speed you're consistently landing — far more useful than "the internet feels slow."

Key Takeaways

• Start with a real baseline test, then work through causes from simplest to most involved.
• A router restart and a wired test rule out the two most common causes in under five minutes.
• If it's worse specifically at certain times of day, congestion — not your setup — may be the real cause.
• Bring specific numbers and test conditions to your ISP rather than a general complaint.