I'm having problem after I changed one of my system's Mb to ASUS A8n-E recently.
It took me few hours to figure out that the A8N-E's nic kill my cable modem once it's on. The cable modem goes blink and lost the connection with my ISP after I turned on this pc. But the communication between my pcs is just fine. I only lost my internet connection. I'm behind DLINK DIR655 router. It lost the WAN connection once the A8n-e is working.
This is very frustrated to me and wondering why??? Is it a dead NIC? (It works within the LAN.) or cable??
More about :a8n kill internet connection cable modem
It's the PSU causing the problem because I left it outside the case. There is some kind of interference between the router, cable modem and the PSU. I'm putting them together into a case to see what happens.