Maybe it's in airplane mode.
Maybe it's not enabled via app or function key.
Maybe there's a driver problem with your laptop.
Maybe there is a hardware issue with your laptop.
Maybe you entered the wrong SSID or password.
Maybe some security software blocks it.
Maybe some malware interferes with the connection.
Maybe there is a serious issue with the OS (is it Windows or Linux?)
Maybe the router is turned off or using a frequency band not compatible with your laptop.
The solution, alas, depends on the cause. So there is some work ahead for you.
wi-fi is not working in my laptop.

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