Default Permalink Structure leads to 404 error

Hello, everyone I am in desperite need of some help. I have been searching for days trying to solve this problem. My blog address is: itsahazardouslife.com My problem is that all of my blog posts show up fine on my home page but when I click on their title to open up their individual permalink I get either a blank page or a 404 error page (it varies). I’ve been searching the forums but most people have this issue after attempting to change their permalink structure. This occurs to my site when the permalink structure is set to default! or to any other option. I have tried all the solutions found for other people, including making my .htaccess file writable, installing a new version of wordpress, setting up permalink structures in my database rather than on the dashboard. But nothing is working and I am about ready to give up. I may at one time clicked on the /%postname%/ permalink structure on the dashboard just while messing around and seeing what it would do but I would think that after re installing wordpress and trying to set it back to default my links would be working again. Any help would be much appreciated.