alsoooo forgot to mention, it was working on tuesday, stopped working on wednesday and havent had it working since, tried to use a restore point but they are all missing, only ones i have are from Wednesday on, and one of the last things I did tuesday before shutting my comp down was to install a windows update and run disk defrag on my system. I have also run AVG to check for a virus but havent come back with anything yett
Ok so I have searched google and seen similar problems but haven't been able to find one quite the same as what I am experiencing
My LAN connections says I am connected at 100MBS but when I attempt to access any sites on Mozilla, or even connect to AIM, I am unable to. It is a wired connection that goes directly into the wall. It had been saying I had limited or no connectivity but now it tells me its connected but clearly isn't. I attempted to renew the ip adress using the command propmt and can successfully do so but continue to have this problem. I replaced my ethernet cable thinking it may be bad but that doesn't seem to help either. I am at college so I am connected in the dorm room, I contacted the help desk to see if they could assist me but they too ran out of solutions. They suggested it may be 1) configured wrong, 2) bad ethernet cable, 3) bad ethernet card. I don't think its the ethernet card and I checked the cable. If anyone has any suggestions on how I can fix this please let me know. Otherwise I may have to resort to reinstalling windows, then hopefully that will work.
I am using Windows XP Home Edition.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic