Hello Brandon and welcome to Bleeping Computer!
Have you tried updating your Ethernet driver from the HP CD-ROM that came with your computer system? Or do you still have the disk?
Most HP systems have all the required drivers that work well with their computer systems right on the CD that comes with the computer system.
Try updating the driver by going to control panel, looking for device manager and instructing the up-date driver
search feature to search the HP CD and see if it finds a match.
Chances are your drivers were corrupted by a virus and the anit-virus program you used deleted the infected .sys files that made your hardware work correctly. (.sys files are usually in the system folder and tell your OS how to use the hardware in question and are often the victum of virus infections. They can be downloaded from unsafe driver download websites.)
Please give that a try and let us know how things have worked out for you.