I had a virus and Malwarebytes Anti-malware found and removed it but ,when I restarted my PC I got a black screen then the no signal detected. So I figured that maybe a system files(s) were damaged during virus removal and decided to reinstall windows 7. After reinstall I clicked to check for updates and was unable to connect to the internet. I forgot to install the motherboard drivers with CD. After drivers were installed I looked to see if I had internet access and saw a red X, so I went to device manager and didn't see a Ethernet controller/driver. I then went to menu bar on device manager clicked view and selected show hidden devices and saw network adapters, clicked drop down arrow and saw 8 WAN Mini ports. So I thought maybe the windows CD is corrupt and tried installing windows vista with same results, then windows XP with same results. So I decided that somehow the motherboards Ethernet connector somehow became damaged, and flashed the bios to see if that would help but the problem remained. I then installed a Ethernet card compatible with windows XP and installed Windows Xp so that there wouldn't be a compatibility issue; and yet the problem still remains. I took the PC apart,cleaned it out and put it back together, reinstalled Windows XP in the hope that maybe somehow it would change something to get my internet working again, it didn't. I browsed the motherboard CD and manually installed the Lan drivers and got a message saying: Can't Find Atheros AR8121/AR8113/AR8114 Ethernet Controller On Your System.So I downloaded the Atheros AR8121/AR8113/Ar8114 Ethernet Controller from various sites including this one and tried installing with same result: Can't Find Atheros AR8121/AR8113/AR8114 Ethernet Controller On Your System. I don't know what else to do, please help.