i've tried everything, maybe you can help/ i can turn on my pc, and it boots up and works fine, although some things have found their way into my stratup registry i dont want there, so after i close out about 12 boxes each startup, i go to yahoo messenger, or read email. it works for about 30 min - 1 hour. then just stops. if i try to go to another website, it says check the name and try again. website cannot be found. then i try to sign onto messenger, and about a second later, it acts like i never tried to sign on.