Lan connection / network adapter problem after computer reset to factory

My computer was a bit over-run with malware (from kids downloading games I suspect...), so rather than keep fighting to remove some of the nastier ones, I just reset the computer to factory start with the disks we made. Windows 7 Home Premium 64 bit. Since that time, I cannot connect to the internet. It does not have a wireless adapter. The power supply and video card were upgraded a couple years ago; everything else is as it came from the factory. Since I cannot get online, I have not done any windows updates. When I go to Network and Sharing Center, it says "You are currently not connected to any networks" (duh) If I click on "change adapter settings" there is NOTHING in that window. When I look at "Device Manager" there is no group for "Network Adapters" in the list. I know very little about this stuff, but it seems like the computer is not recognizing that there is even an ethernet cord plugged in. There is of course, and when I plug that same cord into a different computer, it works. Looking under the hood, I see the network adapter is integrated.... So maybe that part is fried somehow, even though everything else seems to be working? It just seems really really odd that it was working before the software reset and now it isn't. Any advice?

As an update: I found the driver on this website. Downloaded it and then transferred to the subject computer. I tried to run it and got an error. "Original Realtek Networking Controller Driver" is at the top. "Your system does not meet the minimum requirement for this update. Update has been cancelled. (9996)" Could this be because it doesn't have other updates installed?

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Quote from: Hans on 10-May-09, 23:02:25
when a device is removed, the driver is stll installed. It will then show as hidden in Device Manager.
Uninstall the old driver:
- goto device manager and show hidden devices;
- point to the Realtek NIC -> right click and then Uninstall.
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Things have worsen I suppose. Something is badly screwed up here.
I tried to follow your advice but when I went into the devices manager I couldn't see the adapter even showing up hidden devices any more. I didn't change any settings, just turn off and start the PC a couple of times.
So I removed the drivers from add/remove programs but cant unistall the hardware as i cannot see it..
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Lan connection / network adapter problem after computer reset to factory

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