Download and Install the latest Bluestacks App Player on your PC.
Even you can use a new phone number with this method. In this method, you don’t need any smartphone or a WhatsApp account. The desktop app will not work if the internet connectivity on your phone goes disconnect.
Place your smartphone’s camera in front of the QR code showing on your PC.
Go to menu or settings and select WhastApp Web on your smartphone.
Open the WhastApp app on your smartphone.
Download, install and launch WhatsApp desktop app.
Here is how to use WhatsApp desktop app on your PC: