I have a issue were my computer will not log on to internet . I am getting a page not found at the top . At the bottom it says server not found and dns error . Well when i flush dns i may get on but only for a short bit and this starts all over again . I have checked the networking card and it says its working fine but still lose internet .

I am on another puter in house that is connected to the router and i get on fine . But if i leave the one downstairs hooked up by the ethernet it will give this one a dns error also . I have reformatted to no prevail . Do you think my network card is bad even though it says it checks out ok .

Might be a guru here that will lend his knowledge