Yesterday, I bought a new graphics card and followed the direction from the guides on how to remove the drivers properly and how to install them. Afterwards, I noticed that my computer that has the new video card wouldn't connect to the internet. I checked my network and it was no longer on it. After a few hours last night and a few hours today, messing around, reinstalling my card, reading some guides, and even reformating my computer, I still can't get back on the internet. I noticed two things which make me think that something is wrong. The first is, when I try to install my mobo chipsets and drivers, I noticed that it will no longer install the usb drivers, or the ethernet drivers. And when I try to install them manually by exploring the cd, the usb drivers install, but it says no hardware/software found for the ethernet. I have tried both cards a few times, just to make sure it wasn't my new card, but still, nothing helps. Secondly, while reading up on network problems, I read that the netword speeds need to match. The computer that is working on the network has a speed of 100 mbs while the other computer has a speed of 400 mbs. Now I really don't know a lot about networking, so this may or may not be true. My computer says that the network adapter is in and working properly. I also noticed that this computer does not have the QoS Packet Schedular, which may be a cause, but once again, I really do not know too much about networking. Anyone have any ideas?