Why isn’t my Windows Movie Maker 12 working?

I have a windows 8.1 laptop and I used to have windows movie maker on it, about 3 months ago, and it would work perfectly. Recently I've been needing it but every time I type in "Windows Movie Maker" or "Movie Maker" in my laptop search bar, nothing would pop up. I tried downloading it from Microsoft as well but it wouldn't work as well. Every time I click download all of essentials it wouldn't do anything and when I clicked "Choose your programs" none of the option they gave had check boxes beside them and instead of a continue button, it has a close button. Please help me find a solution. By the way I've tried restarting my laptop. Thank you.