After Disabling / Enabling Connection - Internet Lost?

I no longer have internet access from my home network ONLY on my desktop computer. Everything was working fine as always - then while I was in my Network and Sharing Center, and clicked on my ethernet connection, 'Local Area Connection 3', I accidentally disabled it. No big deal I thought, so I re-enabled the connection. Except for some reason, my connection is all screwed up now. The name of this connection was and always has been 'dkm2' and now it just says 'Network', with no internet access. I have unplugged the cord and plugged it into this laptop and it immediately recognizes 'dkm2' and connects flawlessly, so I know the problem is on the desktop computer's end, and not the cable or router. I have tried reinstalling the ethernet adapter, as well as reinstalling/updating all drivers for it.The network diagnostic tool turns up with a message that says the connection between either my ethernet adapter or router and the Internet is broken. No matter what I seem to try, I can't get my connection to go back to it's normal 'dkm2' connection and stop giving me a generic, disconnected 'Network'. I can't figure out what could have changed. All that happened was the disabling and enabling of Local Area Connection 3.