Can not go to yahoo website

Assuming you are using IE8 and have a reasonably standard installation, on the right hand side of the IE8 window on one of the toolbars, you will see a question mark. To the left of the question mark is a "Tools" drop down. Select "Internet Options" at the bottom. On the window that pops up, the second tab is "Security". Click it, then "Restricted Sites", the the "Sites" button. See if Yahoo is listed in any form - if it is remove it.

If you can't find it, consider using another browser such as Firefox. IE8 is known as being very buggy.

HIi

Plz chk if ur firewall is blocking the website from opening, and i would also suggest u to plz chk try the same wid other browser, as your question doesnt carry much details like, which browser ur using as well as if ur using any firewall software apart from windows default firewall?

DO chk ur firewall settings as well as try wid other browser, if problem still persists plz revert back wid the details, this may also happen some times from ISP's end i.e ur Internet Providers End.

Regards