Web page not loading

I'm a web designer so I'm at my clients site a lot on my Imac it does not load but all other system is works fine, i have cleared cashe, history as well as tried it on different browsers all the same issue, any ideas would be great thank you.

Do you get an error? without knowing what you get, it'll be impossible to PD.

Do not get any real errors, closed would be page can't be displayed error.

I,m using parallel on my server and when i go to the domain in question i get to root of the parallel, but this only happen on this one Imac the all other computers and other people going to the domain it works fine.

thanks for commenting