Internet pages not loading unless refreshed

I am having a problem with my internet pages loading. when I click on a bookmark or a link often it not load the page and only come up with a error. I have to manually reload the site. At times this can be very slow.

I have xp pro. With a AMD 3800 x2 on a DFI Landparty NF4 SLI-DR. I use a Nvidia 7800 graphics card.

At first I thought it could be my network so I plugged my laptop into the network and had no problems at all. I tried the other LAN port in my motherboard. My motherboard comes fitted with dual LAN ports which run at a gig speed. I tried different browsers and still the same problem. I tried linking just contected to the router and still no luck. this has been going on for a few months and I have no clue what to do next.

My guess now is that it must be a software problem or hardware (driver related)?

any help would be welcome.

 

What errors are you getting?

 

the error of not finding the page. not a 404 error but a contection error.