Page Isn't Working

I am trying to make changes to a website. I am able to log in and look at the dashboard. When I go to save the changes I have made it tries to load for a couple of minutes then it gives me an error page that says “page isn’t working, didn’t send any data”. I am able to make changes from other computers in our office but not from my computer in my office? I have cleared all my history and cache and it still won’t work. Any suggestions on how to fix this problem?