Follow these steps to troubleshoot a router that is not broadcasting a Wi-Fi signal:

1. Check if the Wi-Fi button is enabled on the router. This is typically represented by a physical button or a toggle switch.
2. Check if the driver is up to date and inquire whether the device is supported by the router's firmware.
3. Verify if the router is connected to the modem.
4. Verify if the router’s antenna is securely connected.
5. Verify if the modem needs to be reset.
6. Check the router's settings and verify if they are correct.
7. If necessary, reset the router and reconfigure its setup.
8. Verify if other devices can detect the Wi-Fi signal.