Windows Explorer is not working

Greetings,

I'm facing a very worrying issue since yesterday : Windows Explorer is simply not working as it should anymore.

Eveytime I try to open a folder, in every way possible, Windows Explorer just freezes then reboots. As a result, I cannot open any folder on my computer nor access to the files inside.

Is anyone able to tell me how to solve this issue, please ? That'd save me !