Libreoffice does not open

On Dell computer running Windows 8.1
Two weeks ago I started having troubles opening Libreoffice. At first, it would open once in a day, afterwards not at all. Double clicking files used to open the program, now it doesn’t. I’ve reloaded the program twice. Now, it will open, say I have a document to recover, recover it, open it, then crash within a second and before I do anything. After that, I can do nothing unless I restart the computer, then go through the same recovery/crash cycle.