<<I have tried EVERYTHING.>>
No one...has ever tried everything...that could possibly correct a problem on a computer, since the problem must be clearly identified first.
<<I have also tried to download antivirus software from the internet...>>
Does that mean that you don't have an AV program already installed, with current updates?
Does that mean that you think or know that your system is infected?
Help us...to help you and provide pertinent background to your situation, please.
Are your connection problems the only problematical scenario your computer currently exhibits? No other problems of any type?
Edited by hamluis, 15 February 2012 - 04:13 PM.