Strange Wifi problem

[Whinis]

I've tried using diffrent wireless cards, rebooted the router and pc, flushed the dns cleared cache virus scanned computer, tried re-installing and still nothing.. Even tried diffrent routers and it wont work. I really am unsure as to why it will not work.. Must be something wrong with the computer

if a different wireless card and a different router did not help the only other thing that could be the problem is the operating system itself.