Ethernet Driver Installs, But Not Properly?

recently I downloaded and installed Spybot S&D, MBAM, and Comodo firewall on a computer of mine and shortly after(1 or 2 days) My Internet connection ceased. I assumed it was something Comodo was blocking so I tried disabling it and then un-installing it and neither changed anything. I tried pinging www.google.com and it failed. I tried pinging my router and it worked. and I tried having my router ping www.google.com and that worked. I also checked the device manager to see if anything was odd and I had a yellow "!" for my ethernet controller. So I whip out the cd for my motherboard and reinstall it and it is successful. I check the connection to the web and it fails. When I check the device manager it still shows a yellow "!" for the ethernet controller. I tried getting the latest set of drivers for my motherboard on another computer and the same results. My motherboard is a gigabyte GA-M57SLI-S4 nvidia nForce 570 sli. It has a Nvidia nForce 10/100/1000 MBPS ethernet on-board adapter.

There are two entries in my device manager: ethernet controller (which has the "!") and nvidia nForce 10/100/1000 mbps ethernet (which displays fine in the device manager) The current driver package I am trying to install is this link. That is what nVidias drop down boxes give me when I enter in my information.I found some forums of people with similar issues but all the solutions tell them to use the device manager's tools to update the drivers but I haven't had any luck with that so far. I may be doing it wrong because those options never seem to work for me. Does anyone have any ideas on what can be going on here?I'm running windows 7 x64 and a AMD Phenom x4 quad core 2.2GHz