If your router keeps restarting, it can be frustrating and disrupt your internet connection. There are several reasons why a router may keep restarting, including:

1. Overheating: Routers can overheat if they are placed in a location with poor ventilation or if they are being used heavily. Overheating can cause the router to restart in an effort to cool down.
2. Firmware issues: The router’s firmware, which is the software that controls the router’s functions, can become corrupted or out of date. This can cause the router to malfunction and restart.
3. Power issues: If the router is not receiving a stable power supply, it may restart. This can be caused by a faulty power cord, a damaged power outlet, or a problem with the router’s power supply.
4. Network congestion: If there are too many devices connected to the router or if the router is being used to transmit large amounts of data, it may become overloaded and restart.
5. Hardware problems: If the router’s hardware is damaged or malfunctioning, it may cause the router to restart.

To fix a router that keeps restarting, try the following steps:

1. Check the router’s placement and ensure that it has proper ventilation.
2. Check for and install any available firmware updates.
3. Check the power supply and ensure that the router is receiving a stable power source.
4. Disconnect some devices from the router or reduce the amount of data being transmitted.
5. If the problem persists, try resetting the router to its factory default settings. If the issue still cannot be resolved, it may be necessary to replace the router.

If you are unable to fix the issue on your own, it is recommended to contact the router’s manufacturer or a technical support representative for further assistance.