Router Keeps Restarting on Its Own, Random Reboots Fixed
A router that reboots itself at random is not normal. Routers are built to run for months without a restart, so repeated reboots mean something is wrong: heat, power, firmware, or failing hardware. The pattern of the reboots is the best clue, so note when they happen before changing anything.
The fix, in order
Note the pattern. Reboots during heavy downloads or streaming point to heat or an overloaded router. Reboots at random times, including overnight when nothing is happening, point to power or hardware. Reboots that started right after a firmware update point to the firmware.
Check the power adapter and outlet. Plug the router directly into a wall outlet, not a power strip. Try a different outlet. If the adapter feels very hot, or the router only reboots when the adapter is moved, try a compatible spare adapter. A failing adapter is one of the most common causes.
Rule out overheating. Move the router into open air, out of a cabinet, off carpet, and away from other hot electronics. Clean dust from the vents with the router unplugged. If the reboots stop after cooling fixes, heat was the cause, see the router overheating guide.
Update the firmware. A buggy firmware version can reboot the router. Check the admin page or the maker's app for an update, and install it over a wired connection, never over Wi-Fi, and never during a storm or a likely power cut.
Reduce the load. Disconnect devices you do not need, turn off features you do not use such as a built-in VPN server or heavy parental controls, and check for a device on the network hammering the connection. An old router can also reboot under the load of many modern devices.
Factory reset and set up from scratch. If nothing else helps, reset the router and reconfigure it by hand instead of restoring a saved backup, a corrupted setting can survive a restore.
If the router smells of burning, is too hot to touch comfortably, or shows scorch marks, unplug it immediately and do not plug it back in. That is a safety issue, not a settings problem.
If it still happens
If the router keeps rebooting after cooling, a new adapter, updated firmware, and a factory reset, the hardware is most likely failing. Routers that reboot under any load, or that reboot even with nothing connected, are usually at the end of their life. Check the warranty with the manufacturer, or replace the unit if it is old.
Common questions
Is it normal for a router to restart itself sometimes? No. A healthy router runs for months without restarting. An occasional reboot after a firmware update is normal, but repeated random reboots are a fault.
Can overheating make a router restart? Yes. Most routers shut down or reboot when the processor gets too hot, as a form of self-protection. Poor ventilation, dust, and enclosed cabinets are the usual causes.
My router restarts every day at the same time. Why? Check the admin page for a scheduled reboot setting, some routers have one. If there is no schedule, a daily reboot at the same time often lines up with a provider-side reconnect or a heavy scheduled task such as a backup or a cloud sync.