Internet Keeps Dropping? Here's How to Fix It

Few things are more disruptive than an internet connection that works fine for a while and then drops without warning — especially in the middle of a video call or an important download. Intermittent disconnections are often harder to diagnose than permanently slow speeds because the problem disappears right when you are trying to investigate it. This guide gives you a systematic way to track down the cause and fix it for good.

Step 1: Establish a Pattern

Before you start changing settings, spend a few minutes observing the problem. The pattern of the drops often points directly to the cause.

Ask yourself:

• How often does it drop? Every few minutes, a few times a day, or only at certain times?
• Does it happen on all devices or just one? If only one device drops, the problem is in that device. If all devices drop, the problem is in your router, modem, or ISP connection.
• Does it happen at a specific time of day? Evening drops often point to ISP congestion. See our article on slow internet at night for more detail on this pattern.
• Do you lose Wi-Fi but keep your wired connection? That points to a router or wireless issue specifically.

Note the answers before proceeding — they will help you skip irrelevant steps.

Step 2: Check for ISP Outages

Before spending an hour troubleshooting your own equipment, confirm the problem is not on your ISP's end. Check your ISP's status page, their social media accounts, or a third-party outage tracker. If there is a widespread outage in your area, no amount of local troubleshooting will fix it — you just have to wait.

You can also check whether your connection drops correspond to the same times reported by neighbors on community forums or outage sites.

Step 3: Restart the Modem and Router

A proper restart clears stale connections, corrupted states, and DHCP leases that sometimes cause intermittent drops.

1. Unplug your modem's power cable.
2. Unplug your router's power cable.
3. Wait 60 seconds.
4. Plug the modem back in first. Wait for it to fully connect (watch the indicator lights).
5. Plug the router back in and wait for it to fully boot.
6. Reconnect your devices and monitor the connection.

If the drops stop after a restart but return within a few days, your hardware is likely experiencing a software bug, memory issue, or is simply aging out.

Step 4: Inspect All Physical Cables

Loose, damaged, or low-quality cables are a leading cause of intermittent disconnections. The tricky thing is that a damaged cable can work fine most of the time and only cause problems under certain conditions (temperature changes, slight movement, bandwidth load).

What to check:

• Ethernet cable from router to modem: Look for kinks, sharp bends, or frayed jacket. Replace with a new Cat5e or Cat6 cable if in doubt.
• Coaxial cable (for cable internet): Check both ends for tight connections. Loose coaxial fittings are a very common cause of intermittent drops. Hand-tighten if needed and look for corrosion on the connector.
• Phone line (for DSL): Check for damage and ensure a proper DSL filter is installed on every phone jack in use.
• Wall to outside connections: Splitters, couplers, and line conditioners along the path from the wall to your modem can degrade signal. Try eliminating unnecessary splitters.

Step 5: Check for Overheating

Routers and modems are often placed in enclosed spaces with poor airflow — on top of cable boxes, inside entertainment units, or in closets. These devices generate heat, and overheating causes exactly the kind of intermittent disconnection and slowdown that is hard to pin down.

• Feel your router and modem with your hand. If either is uncomfortably hot, overheating is likely.
• Move the device to an open, ventilated space.
• Ensure there is at least a few inches of clearance on all sides.
• Check that the device's ventilation slots are not blocked.

Some routers display a temperature reading in their admin panel. Check this if your router supports it.

Step 6: Look for Wi-Fi-Specific Causes

If only your wireless connection drops while wired devices stay online, the issue is specific to your Wi-Fi setup.

Common wireless drop causes:

• Channel congestion: A neighbor's router on the same Wi-Fi channel as yours can cause interference leading to drops. Use a Wi-Fi analyzer to check channel usage and switch to a less congested channel.
• Router power save settings: Some routers have power-saving features that reduce radio power during idle periods, causing devices to lose their connection. Check your router's wireless settings and disable aggressive power saving.
• Device driver issues: Outdated network adapter drivers on a laptop or desktop can cause random disconnections. Update drivers via Device Manager on Windows or through your manufacturer's website.
• IP address conflicts: Two devices assigned the same IP address can cause one or both to lose connectivity. Check for DHCP conflicts in your router's connected device list.

For more Wi-Fi troubleshooting steps, our guide on how to fix slow Wi-Fi at home covers many relevant settings.

Step 7: Check Your Modem's Signal Levels

If you have a cable or DSL modem, it has internal diagnostic pages that show signal levels — and these levels directly affect connection stability. Weak signal, high noise, or too many signal corrections are all signs of line problems.

For cable modems: Log into the modem's status page (often at 192.168.100.1) and look for:

• Downstream power level: Ideally between -7 dBmV and +7 dBmV. Values outside this range suggest line problems.
• Downstream SNR (signal-to-noise ratio): Should be above 30 dB. Lower values mean more errors.
• Uncorrectable codeword errors: These should be zero or near zero. High counts indicate a line problem that needs ISP attention.

Step 8: Test with a Different Device

Plug a different device (laptop, gaming console, or another computer) directly into your router via Ethernet. If that device also experiences drops, the problem is in your modem, ISP line, or router. If that device stays connected while the original device drops, the problem is device-specific — check the device's network adapter settings, drivers, or power management settings.

Step 9: Contact Your ISP

If you have worked through all of the above and drops continue, especially if your modem signal levels are outside the acceptable range, it is time to contact your ISP. Ask them to:

• Check line signal levels remotely (they can often do this without a visit).
• Inspect the line from the street to your home for damage or degradation.
• Check for noise or signal issues on the node serving your neighborhood.
• Send a technician if remote diagnostics show a problem.

Keep a log of when drops occur (time, duration, what you were doing) to give the technician useful data.

Frequently Asked Questions

Why does my internet drop every night at the same time?

Regular drops at predictable times often indicate ISP network congestion during peak hours, an automatic scheduled event on your router (like a firmware update check or lease renewal), or a heating issue if the drop correlates with a household appliance turning on.

My internet drops for a few seconds and then reconnects. What causes that?

Brief disconnections followed by automatic reconnection are often caused by intermittent signal issues on the coaxial or phone line, loose cable connections, or a modem with weak signal levels. Check cables and modem signal levels first.

Could my neighbor's Wi-Fi be causing my connection to drop?

Wi-Fi interference from a neighbor's router can cause your wireless connection to stutter or drop, but it would not typically cause your wired connection to drop. If only wireless devices disconnect, channel interference is a plausible cause.

How do I know if the problem is my router or my modem?

Connect a device directly to your modem with an Ethernet cable (bypassing the router entirely). If the drops stop, the router is the culprit. If drops continue, the problem is in the modem or the ISP line.

Final Thoughts

An internet connection that keeps dropping is fixable — it just takes patience and a methodical approach. Work through each step in order, and test after each change to see if the drops stop. Run a free speed test with SpeedCheck.DEV when your connection is stable to confirm it is performing as expected, and note the time and speed if you catch the connection during one of its drops — that data can be invaluable when talking to your ISP.