Daedalus is not working because your machine does not have enough disk space available. Daedalus consumes quite a bit of disk space. Upgrades require 2 Gb, and the blockchain requires 15 Gb (as of October 2018).
For both Windows and Mac there are many ways to create space on your computer.
Two simple ways are:
1. Empty the trash. If that does not work,
2. Find and delete large files if you have any like unwanted movies or software installables. Don’t forget to empty the trash after you do this.