emachine

With your E-Machine, you should have received a recovery CD and a motherboard CD. You said the recovery CD is not working, but it must be working if you have Windows loaded and can see the device manager. So, you need to run the 2nd CD now to install the motherboard drivers. The network adapter and communication device are built into the motherboard.

If you did not receive another CD along with the machine when you purchased it, either contact E-Machine, or use another computer to go to their web site to see if you can locate drivers for the specific model you purchased. There should be installation instructions there also.

Another way to get the drivers is by locating the manufacturer and specific chip set (model) of the motherboard itself, finding that manufacturer's web site and downloading the drivers from there. This last option is usually the hardest for beginners, so start with E-Machine.