Crashes, No Sound, or Screen Glitches?
Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteWindows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstalliTechGuides is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Learn more
Why does my router keep turning off? The answer usually falls into five categories: unstable power, overheating, firmware or scheduled-reboot problems, a modem or ISP failure mistaken for a router shutdown, or failing hardware. If every LED goes dark, check power and hardware first; if the LEDs stay on, investigate the internet connection, WAN link, or Wi-Fi.
“The internet went down” and “the router powered off” are not the same problem. The fastest diagnosis starts by watching the LEDs during the failure, then testing the router with a known-good power path and a minimal number of connected devices.
Key takeaways
- All router LEDs going dark points first to the power adapter, outlet, overheating, or internal hardware—not automatically to an ISP outage.
- A router that stays powered but loses internet access is more likely experiencing a modem, WAN, ISP, DNS, DHCP, or configuration problem.
- A failure at the same time every day should prompt a check for scheduled reboots, automatic firmware updates, smart plugs, and ISP maintenance.
- Disconnecting Ethernet devices and reconnecting them one at a time can expose a bad cable, switch, access point, or network loop.
- A factory reset erases configuration and cannot repair a defective adapter, overheating component, or unstable ISP line, so it should not be the first troubleshooting step.
Why does my router keep turning off, rebooting, or losing internet?
Why does my router keep turning off? The visible symptom can represent several different failures. A router may genuinely lose electrical power, crash and restart, stop broadcasting Wi-Fi, or remain fully operational while the modem or ISP connection fails.
| What you observe | Most likely category | First thing to check |
|---|---|---|
| All LEDs go dark | Power interruption, bad adapter, overheating shutdown, or hardware failure | Adapter, outlet, surge protector, and router temperature |
| LEDs go dark, then return through the normal boot sequence | Power interruption or router crash/reboot | Power path, heat, firmware, and reboot timing |
| Power LED remains on but Wi-Fi disappears | Wireless-service crash, radio issue, configuration problem, or firmware fault | Wired connectivity and router logs |
| Wi-Fi remains visible but devices say “no internet” | Modem, ISP, WAN, DNS, DHCP, or authentication problem | Modem or ONT status and the router’s internet page |
| Only one device disconnects | Client device, driver, interference, or device-specific issue | Another phone or computer on the same network |
| The problem happens at the same time each day | Scheduled reboot, firmware update, ISP maintenance, smart plug, or power event | Router schedule and household automation settings |
| The problem starts when a cable or device is connected | Bad Ethernet cable, faulty downstream device, or network loop | Minimal Ethernet configuration |
| The problem starts after hours of heavy use | Heat, weak adapter, firmware crash, or resource exhaustion | Ventilation and a cool-location test |
How can you tell whether the router actually powered off?
Check the LEDs during the failure rather than relying only on a phone’s Wi-Fi icon. Record whether the power, internet or WAN, Wi-Fi, and LAN LEDs remain lit, turn amber or red, blink continuously, or go completely dark.
Popular on Amazon
- DUAL-BAND WIFI 6 ROUTER: Wi-Fi 6(802.11ax) technology achieves faster speeds, greater capacity and reduced network congestion compared to the previous gen. All WiFi routers require a separate modem. Dual-Band WiFi routers do not support the 6 GHz band.
- AX1800: Enjoy smoother and more stable streaming and gaming with 1.8 Gbps total bandwidth (up to 1200 Mbps on 5 GHz and up to 574 Mbps on 2.4 GHz). Actual speeds cannot exceed your internet plan and vary based on conditions, distance, and obstacles.
- CONNECT MORE DEVICES: Wi-Fi 6 technology communicates more data to more devices simultaneously using revolutionary OFDMA technology
- EXTENSIVE COVERAGE: Achieve the strong, reliable WiFi coverage with Archer AX1800 as it focuses signal strength to your devices far away using Beamforming technology, 4 high-gain antennas and an advanced front-end module (FEM) chipset
- OUR CYBERSECURITY COMMITMENT: TP-Link is a signatory of the U.S. Cybersecurity and Infrastructure Security Agency’s (CISA) Secure-by-Design pledge. This device is designed, built, and maintained, with advanced security as a core requirement.
LED behavior is model-specific. NETGEAR documents different meanings for amber, blinking, and off states on supported routers, including startup behavior and possible firmware problems; those meanings should not be applied universally to ASUS, TP-Link, or other models. See the NETGEAR LED troubleshooting guidance for a manufacturer-specific example.
If the router follows a full boot sequence after the incident, the router either lost power or crashed. If the power LED never goes out but websites stop loading, the router may still be running and the failure may be upstream.
Could a bad outlet, adapter, or power connection turn off the router?
Yes. An unstable outlet, loose connector, failing power adapter, damaged cable, defective surge protector, or brief power fluctuation can make a router restart or appear to shut down. ASUS identifies unstable power as a cause of automatic restarts and recommends checking the outlet, extension cord, and adapter connection.
Run this power-path test in order:
- Push the adapter firmly into the router and the wall outlet.
- Inspect the adapter cable for cuts, severe kinks, exposed conductors, or a loose barrel connector.
- Plug the router directly into a known-good wall outlet.
- Temporarily bypass the power strip, extension cord, or surge protector.
- Try another outlet, preferably on a different circuit if that is practical.
- Use the manufacturer-supplied adapter or an exact manufacturer-approved replacement.
Do not use a substitute adapter merely because its plug fits. The replacement must match the router’s required voltage, provide at least the required amperage, use the correct polarity, and have the correct connector size. The ASUS power troubleshooting guidance and NETGEAR’s router LED guidance both recommend checking the supplied adapter and testing a direct wall connection.
A brief power interruption may be too short to notice elsewhere in the house. An adapter can also fail only after warming up. If the modem, router, and optical network terminal all reboot together, investigate their shared outlet, power strip, UPS, or household electrical supply before replacing the router.
Stop using an outlet that is warm, loose, sparking, or visibly damaged. Stop using equipment that smells burnt, crackles, melts, smokes, or shows signs of electrical damage. Do not open a mains-powered adapter or router unless you are qualified to do so.
Can overheating make a router turn off or restart?
Yes. A router in a closed cabinet, on thick carpet, under fabric, in direct sunlight, or beside a radiator may become unstable after running for hours. ASUS recommends improving ventilation and avoiding high-temperature environments when troubleshooting routers that become hot or restart; NETGEAR also describes overheating as a cause of reduced performance or shutdown in supported mobile-router products.
Do these 3 things before closing this tab:
1Clear out junk files and repair common Windows errors2Scan for outdated or missing drivers - takes under a minute3Repair Windows errors before they cause bigger problemsFor a safe heat test:
- Move the router to a hard, open surface.
- Keep every ventilation opening unobstructed.
- Leave space around the device according to the manufacturer’s instructions.
- Keep the router away from direct sunlight, radiators, ovens, and other heat sources.
- Avoid beds, sofas, thick carpet, and other soft surfaces.
- Do not cool the router with liquids or unsafe improvised methods.
- Note whether the failure happens only after several hours, during heavy downloads, gaming, video calls, or many simultaneous connections.
Run the router in the cooler, ventilated location for at least a day. If the restarts stop, heat is a credible cause, although the test does not rule out an adapter or internal component that fails when warm. Router thermal limits vary by model, so there is no universal safe temperature to apply to every device.
Also popular on Amazon
- Dual-band Wi-Fi with 5 GHz speeds up to 867 Mbps and 2.4 GHz speeds up to 300 Mbps, delivering 1200 Mbps of total bandwidth¹. Actual speeds cannot exceed your internet plan and vary based on conditions, distance, and obstacles such as walls.
- Dual-band routers do not support 6 GHz.
- Covers up to 1,000 sq. ft. with four external antennas for stable wireless connections and optimal coverage.
- Supports IGMP Proxy/Snooping, Bridge and Tag VLAN to optimize IPTV streaming
- Access Point Mode - Supports AP Mode to transform your wired connection into wireless network, an ideal wireless router for home.
Is a scheduled reboot or automatic firmware update causing the shutdown?
A router that restarts at a predictable time may be following a reboot schedule, installing firmware, responding to an ISP-managed maintenance window, or being switched by a smart plug or home-automation rule.
Open the router’s app or web interface and search under labels such as System, Administration, Advanced, or Maintenance. Look for Schedule Reboot, Auto Reboot, Scheduled Maintenance, and automatic firmware-upgrade settings. Menu names vary by model, hardware revision, region, and firmware version.
ASUS documents an example path of Settings > System settings > Schedule Reboot in the ASUS Router app and notes that automatic firmware upgrades can restart the router. TP-Link also identifies Auto Reboot as a possible cause and documents scheduled rebooting for supported products. Check the ASUS automatic-restart information, the TP-Link restart troubleshooting article, and the TP-Link model-specific manual example for how vendor interfaces differ.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
A restart immediately after a firmware update can be normal. Repeated rebooting, a prolonged boot loop, or instability that began immediately after an update may indicate a failed or model-specific firmware problem. Do not download unofficial firmware or attempt a rollback unless the manufacturer explicitly documents that procedure for the exact model.
What should you do about firmware and configuration problems?
Update firmware only through the manufacturer’s official support page or app, and confirm the exact model, hardware revision, and region before starting.
- Record the current firmware version.
- Identify the exact model and hardware revision from the label or administration page.
- Use the manufacturer’s official support page or app.
- Confirm that the update matches the exact model and region.
- Back up the configuration if the router supports backups.
- Use an Ethernet-connected computer if possible.
- Do not unplug the router during the update.
- Wait for the router to complete its reboot.
- Test stability for at least a day before changing several other settings.
ISP-supplied gateways may receive firmware from the ISP rather than directly from the owner. Firmware menus and availability vary, and a firmware update can improve stability while also causing a model-specific regression. NETGEAR recommends checking firmware as part of connectivity troubleshooting, while ASUS and TP-Link identify firmware as a relevant stability step. Use the NETGEAR modem-router troubleshooting guidance, ASUS Wi-Fi troubleshooting guidance, or the router’s own official support page.
Can a bad Ethernet cable or network loop make the router unstable?
Yes. A damaged Ethernet cable, failing switch, misconfigured access point, or network loop can cause severe local-network instability and make a healthy router appear defective.
Quick wins for a faster PC:
Clear out junk files and repair common Windows errorsFree Scan →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Use this minimal-configuration test:
- Disconnect every Ethernet cable except the WAN or internet cable and one cable to a test computer.
- Run the router in that minimal configuration.
- If the router stabilizes, reconnect switches, access points, mesh nodes, cameras, and other devices one at a time.
- When the problem returns, inspect the last device and cable connected.
- Confirm that no Ethernet cable connects two LAN ports on the same network in a loop.
- Review managed-switch, mesh-backhaul, and access-point settings if those devices are present.
NETGEAR specifically recommends disconnecting Ethernet connections one by one and checking for network loops when a router behaves erratically or fails to boot. This test is valuable because it removes several possible causes without erasing the router’s configuration.
Also popular on Amazon
- Dual band router upgrades to 1200 Mbps high speed internet (300mbps for 2.4GHz plus 900Mbps for 5GHz), reducing buffering and ideal for 4K stream
- Full Gigabit Ports - Gigabit Router with 4 Gigabit LAN ports, ideal for any internet plan and allow you to directly connect your wired devices
- Boosted Coverage - Four external antennas equipped with Beamforming technology extend and concentrate the Wi-Fi signals
- MU-MIMO technology - (5GHz band) allows high speeds for multiple devices simultaneously
- Access Point Mode - Supports AP Mode to transform your wired connection into wireless network, an ideal wireless router for home
How do you separate a router failure from a modem or ISP outage?
If the router’s management page remains accessible while websites fail, the router may be operating normally while the modem, ONT, WAN connection, DNS, DHCP, authentication, or ISP service is failing.
Check the modem or ONT
Observe whether the modem or optical network terminal reboots at the same time as the router, loses its online or sync indicator, reports errors, or shows a service event. Check the power connection and the coaxial, fiber, or Ethernet cable between the upstream device and the router.
For cable internet, splitters, line noise, signal levels, modem firmware, and provisioning can cause intermittent service. NETGEAR recommends checking cable-modem power levels, removing unnecessary splitters, checking firmware, and contacting the ISP when levels or activation are abnormal. Signal ranges are technology- and provider-specific, so generic “good” levels should not be applied without the ISP’s equipment and standards.
Recommended Free Tools
Test a wired device
Connect a computer directly to the router by Ethernet. Check whether the router-management page opens, whether the Wi-Fi network remains visible, and whether local devices can communicate even when internet access is unavailable. A working management page with failed websites points away from a complete router power loss.
Temporarily bypass the router
If the ISP modem permits a direct wired connection, temporarily connect one computer to the modem and follow the ISP’s required reboot or authorization process. Restore the normal router connection afterward. Direct testing may require DHCP renewal, ISP authentication, or a particular reboot sequence, so the result depends on the ISP and modem mode. If the direct connection also fails, the router is less likely to be the root cause.
How can continuous ping testing show where the failure occurs?
A continuous ping can compare the local router with an internet destination. Ping results are clues rather than absolute proof because some devices and networks block or deprioritize ICMP traffic.
Find the local gateway
On Windows, run:
ipconfigFind Default Gateway. Common addresses include 192.168.1.1 and 192.168.0.1, but use the address shown on your device.
On macOS, run:
route -n get default | grep gatewayOn Linux, run:
ip route | grep defaultPing the router
Replace the example address with the actual gateway. On Windows, run:
Also popular on Amazon
- FAST, RELIABLE WIFI: Delivers fast, reliable WiFi across your apartment or small home for streaming, video calls, browsing, and smart home devices.
- WORKS WITH YOUR EXISTING INTERNET SERVICE: Pairs with your existing modem or gateway via ethernet. Compatible with most cable, fiber, DSL, and satellite providers. Some gateways and modem router combos may require bridge mode. No coax needed.
- SET UP AND MANAGE YOUR NETWORK WITH THE NIGHTHAWK APP: Download the free Nighthawk app on iOS or Android for guided setup. Manage WiFi, run speed tests, pause devices, and set up guest networks from anywhere. Active internet required.
- READY FOR THE DEVICES YOU ALREADY OWN: Your phones, laptops, and TVs work right out of the box. WiFi 6 delivers speeds up to 1.8 Gbps across 2.4 GHz and 5 GHz bands. Backward compatible with WiFi 5 and earlier.
- COVERAGE IN EVERY ROOM: Covers up to 1,500 sq. ft. for up to 20 connected devices. Walls, floors, and interference can reduce range. Larger or multi-story homes may benefit from a NETGEAR Orbi mesh WiFi system.
ping -t 192.168.1.1Stop the Windows test with Ctrl+C. On macOS or Linux, run:
ping 192.168.1.1For an optional DNS-independent internet test, run:
ping 1.1.1.1| Ping result | What it suggests |
|---|---|
| Router ping fails while every LED goes dark | Local power interruption, router crash, or hardware issue |
| Router ping continues but internet ping fails | WAN, modem, ISP, DNS, or upstream problem |
| Router ping fails over Wi-Fi but works over Ethernet | Wireless-specific failure or interference |
| Both tests fail on one device only | Client adapter, driver, software, or device-specific issue |
A successful ping to a public IP does not prove that web browsing, HTTPS, DNS, or every ISP service is healthy. Use ping alongside the LEDs, wired test, modem status, and failure timing.
How should you power-cycle a modem and router?
For a separate modem and router, power on the modem or ONT first and wait for its online or sync state to stabilize before powering on the router.
- Turn off or unplug the router.
- Turn off or unplug the modem or ONT.
- Wait about one minute.
- Power on the modem or ONT first.
- Wait until its online or sync indicators are stable.
- Power on the router.
- Wait for the router to complete its boot sequence.
- Reconnect or test client devices.
This sequence can repair a transient modem-router state, but it cannot fix a defective adapter, overheating, corrupt firmware, or an ISP line problem. NETGEAR includes power cycling in its standard modem-router connectivity procedure.
Should you factory-reset the router?
Factory-reset the router only after checking power, heat, cables, schedules, firmware, modem status, and minimal configuration. A reset erases settings, disconnects devices, may require ISP credentials or activation, and cannot repair a physical power or thermal fault.
Before resetting, record or back up the following:
- Wi-Fi name and password.
- ISP username and password, if required.
- PPPoE, VLAN, static-IP, and IPv6 settings.
- Port forwards and DHCP reservations.
- Parental-control and access-control rules.
- Mesh-node information.
- VPN and smart-home settings.
Use the reset button only according to the exact model instructions. If a reset helps only temporarily, the cause may be corrupted configuration, a firmware-state problem, a setting conflict, resource exhaustion, or a coincidental recovery of the power or ISP connection. A temporary improvement does not rule out hardware failure. NETGEAR presents factory reset as a later troubleshooting option rather than a replacement for checking power and cables.
When should you contact the ISP or replace the router?
Contact the ISP when the modem or ONT loses sync, the direct-to-modem test also fails, the ISP confirms abnormal line signals or provisioning, or the modem and router reboot together. Give the support representative the exact failure times, modem LED behavior, whether a wired device failed, and whether the router’s management page remained accessible.
Also popular on Amazon
- Tri-Band WiFi 6E Router - Up to 5400 Mbps WiFi for faster browsing, streaming, gaming and downloading, all at the same time(6 GHz: 2402 Mbps;5 GHz: 2402 Mbps;2.4 GHz: 574 Mbps)
- WiFi 6E Unleashed – The 6 GHz band brings more bandwidth, faster speeds, and near-zero latency; Enables more responsive gaming and video chatting
- Connect More Devices—True Tri-Band and OFDMA technology increase capacity by 4 times to enable simultaneous transmission to more devices
- Unique Design, More RAM, Better Processing - A unique housing design provides optimal heat dissipation, combined with a 1.0 GHz dual-core CPU and 512 MB High-Speed Memory, the AXE75 is designed for long-term reliability and performance.
- EasyMesh-compatible - Extend network range even more by adding EasyMesh-compatible routers, extenders, or wireless powerline adapters for a seamless, whole-home connection. Eliminate dead zones, drops, and lag as you move across your home.
Seek manufacturer warranty support or consider replacement when the router continues rebooting with stable power, proper ventilation, current supported firmware, all downstream Ethernet devices disconnected, and no confirmed modem or ISP fault. Router age alone does not prove failure.
A replacement router is a poor first purchase if the actual cause is a bad adapter, defective outlet, failing modem, unstable ISP line, damaged cable, switch, mesh node, or network loop. An approved replacement adapter is appropriate when testing proves the adapter is failing. A UPS battery backup is appropriate when the home has brief power flickers or both modem and router reboot together, but a UPS cannot fix overheating, firmware crashes, router hardware failure, or an ISP outage.
What evidence should you record?
Keep a short log for every incident:
- Exact date and time.
- Whether every LED went out.
- Whether the modem or ONT rebooted.
- Whether wired devices failed.
- Router model, hardware revision, and firmware version.
- Router location and whether it felt unusually hot.
- Devices connected to each Ethernet port.
- Whether the failure followed heavy traffic, gaming, video calls, or large downloads.
- Whether changing the outlet or moving the router changed the behavior.
A predictable time supports a schedule or maintenance theory. A failure after hours of use supports heat or power-adapter testing. A failure triggered by one cable or device supports minimal-configuration isolation. This evidence is more useful to ISP or manufacturer support than simply reporting that “the Wi-Fi keeps turning off.”
Free tools Windows power users keep installed
One-click scans. No signup required.
Frequently Asked Questions
Why does my router turn off at night?
A router that turns off at the same time each night may have a scheduled reboot, automatic firmware update, smart-plug rule, ISP maintenance window, or a household power event. Check the router app and web interface under System, Administration, Advanced, or Maintenance for reboot schedules, then compare the time with the modem or ONT logs and your home-automation settings.
Can a bad power adapter cause Wi-Fi to disconnect?
Yes. A failing or incorrect power adapter can make a router restart, lose its radio, or become unstable, especially after the adapter warms up or during heavy use. Test the manufacturer-supplied or approved adapter directly from a known-good wall outlet; matching the plug alone is not sufficient.
Why does the router look fine but the internet disappear?
If the router LEDs remain on and its management page works, the router may not have powered off. Check the modem or ONT, WAN cable, ISP outage status, DNS, DHCP, authentication, and line synchronization before resetting or replacing the router.
Should I factory-reset my router when it keeps rebooting?
No, not as the first step. Check power, ventilation, scheduled reboots, firmware, Ethernet devices, modem status, and a minimal configuration first. A factory reset erases Wi-Fi, ISP, port-forwarding, mesh, and other settings, and it cannot repair a failing adapter or hardware component.
The Tool Desk
Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Will a UPS stop router reboots?
A UPS can prevent reboots caused by brief household power interruptions when the modem, router, and other required network equipment are connected to battery-backed outlets. A UPS will not fix a router that overheats, crashes because of firmware, has defective hardware, or loses service because of an ISP outage.
The Bottom Line
Bottom line: If every LED goes dark, test the adapter, outlet, surge protector, ventilation, and router hardware first. If the LEDs stay on but the internet disappears, investigate the modem or ONT, WAN connection, ISP, DNS, and router configuration. Use a minimal setup and wired testing before a factory reset or replacement, and escalate to the ISP or manufacturer when the evidence identifies an upstream or hardware fault.
