zoom won't install

[Shed-and-buried]

Anyone have a clue what is going on here? Windows 10 (Pro) crashed and died. I have reinstalled it. When I download the zoom app and try to install, it starts to run through the installation process but ten vanishes. Zoom appears on the start menu. When you click on it, nothing happens. Even skype is working OK. I not a PC expert so any help appreciated.