My laptop does not connect Wi-Fi

Hi everyone, this is me Pranav here. I am a digital marketer. I use to facilitate many managers with my digital marketing skills. I have faced a little problem and I am posting this thing here for a solution. The problem is that my old laptop is not connecting wi-fi. I don’t know why but it is not connecting. Yesterday my new one laptop did not charge so I thought to use the older one and when I operated it, it did not connect wi-fi and because of that issue, I faced many problems. At the taskbar of the laptop screen, it is not showing the option of wi-fi and Bluetooth. Guys in starting days it worked properly but now this is not functioning. Guys, I want its solution because I have to urgently talk to a client so please suggest all the positive ways to use for connecting wi-fi

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