Router Keeps Restarting Randomly: 7 Fixes to Try in (October 2026)

There is nothing more frustrating than your internet cutting out mid-video call or during a gaming session, only to look over and see your router’s lights cycling through their boot sequence again. If your router keeps restarting randomly, you are dealing with a problem that affects remote workers, gamers, and smart home owners alike. Our team has spent years troubleshooting networking equipment, and the good news is that most router restart loops can be fixed without buying new hardware.

In this guide, we will walk you through the seven most common reasons your router keeps rebooting and exactly how to fix each one. We will also cover when it is time to replace your router and how to prevent this problem from coming back.

Why Your Router Keeps Restarting: Quick Answer

A router that keeps restarting randomly is almost always caused by one of these seven issues, listed from most to least common:

• Power supply problems — A failing power adapter, loose connection, or unstable outlet delivers inconsistent voltage that triggers safety reboots.

• Overheating — Poor ventilation or placement in a closed cabinet causes the router to shut down and restart to protect its components.

• Outdated or buggy firmware — A firmware bug can crash the router’s operating system, forcing an automatic restart.

• Auto reboot feature enabled — Many routers have a scheduled reboot setting that cycles the device at set intervals.

• Failing hardware — Capacitors and internal components degrade over time, causing random crashes.

• ISP or modem signal issues — A faulty modem or unstable ISP signal can cause the router to lose connection and restart.

• Power strip or surge protector problems — Cheap or overloaded power strips deliver dirty power that destabilizes the router.

Work through the steps below in order, starting with the power supply, since it accounts for the majority of random restart cases we see.

Step 1: Check Your Power Supply and Power Outlet

The power supply is the single most common cause of a router that keeps restarting randomly. I have seen cases where a router rebooted every five minutes for weeks, and the entire problem disappeared after swapping out a worn-out power adapter.

Start by unplugging your router’s power cable and plugging it directly into a wall outlet. Do not use a power strip, surge protector, or extension cord for this test. Power strips are a hidden culprit that no major troubleshooting guide mentions, but forum users consistently report that removing the power strip solved their reboot loop.

Here is why power strips cause problems: they distribute power across multiple devices, and when a power-hungry device like a space heater or air conditioner cycles on, the voltage drop can momentarily starve your router. That brief dip is enough to trigger a restart. surge protectors add another layer of complexity because their internal components degrade over time, eventually delivering noisy or inconsistent power.

If plugging directly into the wall fixes the issue, your power strip was the problem. If the router still restarts, try these next steps:

• Swap the power adapter with an identical one that matches the same voltage, amperage, and polarity. Using an adapter with the wrong specs can damage your router.

• Test a different wall outlet on a separate circuit in your home. A faulty electrical outlet or overloaded circuit can cause intermittent power drops.

• Check that the power connector sits firmly in the router’s port. A loose barrel jack can cause micro-disconnects that trigger reboots.

One Reddit user on r/HomeNetworking reported that their router restarted every few minutes for over a month before they discovered the power adapter had developed an internal fault. A replacement adapter fixed it permanently. This is the first thing I check whenever a router starts rebooting on its own.

Step 2: Fix Router Overheating Issues

Routers generate a surprising amount of heat, and when that heat has nowhere to go, the device shuts itself down and restarts as a protective measure. If your router restarts more frequently during warmer months or after running for several hours, overheating is likely the cause.

The most common mistake is placing the router inside a closed cabinet, on a carpeted surface, or behind other heat-generating electronics. One user on Tom’s Hardware Forums traced their hourly restart loop to a router tucked inside a media cabinet with zero airflow.

To fix overheating, move your router to an open, well-ventilated location. Keep it on a hard, flat surface rather than carpet or fabric. Make sure nothing is stacked on top of it, and leave at least two inches of clearance on all sides.

Check the router’s temperature by placing your hand on top during operation. If it feels hot enough that you would not want to hold it for more than a few seconds, it is running too warm. Some users add a small USB fan or place the router near a room-temperature air source to help.

Step 3: Update Your Router Firmware

Firmware bugs are a well-known cause of router restart loops. Manufacturers regularly release firmware updates that patch stability issues, and running an outdated version can leave your router vulnerable to crashes that trigger automatic reboots.

To update your firmware, log into your router’s admin panel by typing its IP address (usually 192.168.1.1 or 192.168.0.1) into a web browser. Navigate to the firmware or system update section, which is typically found under Advanced Settings or System Tools. Click the option to check for updates and install any available version.

Here is an important caveat that forum users frequently raise: sometimes a firmware update itself introduces new bugs. If your router started restarting after a recent update, you may need to roll back to the previous firmware version. Check the manufacturer’s support page for downgrade instructions.

After updating, give the router 24 to 48 hours to see if the restart loop stops. Firmware updates can also trigger an initial reboot cycle, so do not panic if it restarts once immediately after installation.

Step 4: Disable the Auto Reboot Feature

Many modern routers include an auto reboot or scheduled reboot feature designed to refresh the system periodically. When enabled, this setting restarts your router at a configured interval, which might be daily, weekly, or at a specific time. If you do not know it exists, it can easily look like a random restart.

TP-Link routers are particularly known for this feature. To check if it is enabled, log into your admin panel and look for System Tools, Scheduled Reboot, or Auto Reboot under the settings menu. If you find it enabled, either disable it entirely or set it to a time when you are not using the internet, such as 4:00 AM.

This setting is often overlooked because it ships enabled on some models out of the box. I always recommend checking this before performing a factory reset, since it is a simple toggle that can solve the mystery instantly.

Step 5: Factory Reset Your Router

If none of the previous steps have stopped your router from restarting randomly, a factory reset can clear out corrupted settings that might be causing instability. This step returns the router to its original out-of-box state, so you will need to reconfigure your WiFi name, password, and any custom settings afterward.

To perform a factory reset, locate the small reset button on the back or bottom of your router. It is usually recessed inside a pinhole. Use a paperclip or pin to press and hold the button for 10 to 15 seconds until all the LED lights flash simultaneously. Release the button and wait for the router to complete its reboot cycle.

Once the router comes back online, log into the admin panel and set up your network from scratch. Update the firmware before reconnecting all your devices, since running old firmware on a freshly reset router can reintroduce the same stability problems.

A factory reset is also worth trying if your router keeps resetting to factory defaults on its own, which can indicate a failing internal memory chip. If the reset fixes the problem temporarily but it returns within days, the hardware itself is likely failing.

Step 6: Check Your Router Logs for Clues

Most routers keep a system log that records errors, reboots, and network events. Checking these logs is one of the most underused diagnostic tools, and it can pinpoint exactly what is happening before each restart. Almost no troubleshooting guide covers this, but forum users swear by it.

To access your router logs, log into the admin panel and navigate to System Tools, System Log, or Status. The log will show entries with timestamps and event descriptions. Look for patterns such as kernel panics, memory errors, or watchdog timeouts that occur right before each restart.

Here is what different log entries typically mean:

• Kernel panic or oops — A firmware or hardware crash. Update firmware or consider replacement.

• Watchdog timeout — The router stopped responding and the system watchdog forced a reboot. Often points to overheating or failing memory.

• Power management event — The router detected a power fluctuation. Investigate the power supply.

• DHCP or WAN disconnect — The ISP connection dropped, which may be a modem issue rather than a router problem.

If you see the same error repeating before every restart, you have identified the root cause. This information is also valuable if you need to contact the manufacturer’s support team.

Step 7: Rule Out Modem and ISP Issues

Sometimes the problem is not your router at all. If you have a separate modem, the modem could be dropping its connection to the ISP, which in turn causes the router to lose internet and appear to restart. ISP signal issues are a frequent cause of what users mistake for router reboots.

To isolate the issue, check whether the modem’s status lights change when the problem occurs. If the modem’s online or downstream light starts flashing or changes color at the same time as your connectivity drops, the modem or ISP signal is the real culprit.

Forum users on r/Comcast and r/HomeNetworking frequently report that replacing an aging modem or contacting the ISP to fix signal levels resolved what they thought was a router restart issue. Dirty power from the modem itself can also bleed into a connected router, so keep the two devices on separate power sources if possible.

If you have a combination modem-router unit provided by your ISP, the troubleshooting steps still apply, but you may need to contact your ISP for firmware updates or hardware replacement.

Signs Your Router Needs Replacement

Not every router restart problem can be fixed with troubleshooting. Hardware eventually wears out, and knowing when to replace versus repair can save you hours of frustration. No major troubleshooting guide covers router lifespan indicators, so here is what to look for.

Most routers last between three and five years under normal use. If yours is older than that and starts developing restart issues, the internal components, particularly the capacitors, are likely degrading. This is a progressive failure that no software fix can address.

Here are the signs that point toward replacement rather than repair:

• The router restarts even after a factory reset and firmware update.

• Restart frequency increases over time despite all troubleshooting steps.

• You notice bulging or leaking capacitors if you open the case (only check if comfortable doing so).

• WiFi range and speed have noticeably degraded compared to when the router was new.

• The router runs unusually hot even in a well-ventilated location.

• System logs show repeated hardware-level errors like memory faults or kernel panics.

If two or more of these signs apply, it is time to shop for a replacement. A new router will deliver better performance, updated security protocols, and years of stable service.

How to Prevent Router Restart Loops

Once you have fixed the immediate problem, a few preventive measures can keep your router running smoothly for years. These steps address the root causes of restart loops before they happen.

First, invest in an uninterruptible power supply, or UPS. A UPS provides clean, stable power to your router and protects it from voltage spikes, brownouts, and brief outages that can trigger restarts. Netgear specifically recommends using a UPS for router protection, and it is one of the most effective preventive steps you can take. A basic UPS that can power a router for 30 to 60 minutes costs far less than replacing a router damaged by a power surge.

Second, plug your router directly into a wall outlet rather than a power strip. If you must use a power strip, use a high-quality one and avoid plugging high-draw devices like space heaters or microwaves into the same strip.

Third, keep your firmware updated. Check for updates every two to three months, or enable automatic updates if your router supports them. Manufacturers patch stability bugs regularly, and staying current prevents many reboot loop triggers.

Finally, keep your router in a cool, open location. Check the temperature periodically, and clean any dust from the vents with compressed air every few months. Dust buildup insulates the components and accelerates overheating.

FAQs

Final Thoughts on Fixing a Router That Keeps Restarting Randomly

When your router keeps restarting randomly, the fix almost always comes down to one of seven causes: power supply, overheating, firmware, auto reboot settings, failing hardware, modem or ISP problems, or power strip interference. Working through these steps in order, starting with the power supply, resolves the vast majority of cases without needing to buy new equipment.

Remember to plug your router directly into a wall outlet rather than a power strip, keep it well-ventilated, update firmware regularly, and consider adding a UPS for power protection. If your router is over five years old and none of these fixes work, replacement is the practical path forward.

Your next step is simple: start with Step 1 and work through each fix. Most users find their answer within the first two or three steps, and you could have stable internet back before the end of the day.