how to stop getting this message? "atheros pcie ethernet contoller"

I hv win 8 pro installed on my pc. recently I attached another hard disk of my old pc to this one and since then I get this strange message everytime I start or restart my pc. its realy annoying that it stays for a pretty while and slows down my pc's startup. otherwise my win 8 use to startup in seconds. I had attached this hdd by removing one of the sata cables of my pc i.e I removed the sata cable of my optical drive n connected the hdd to it. I hv only two sata ports on my main board. Now I don't know if I'm getting this msg bcoz of this or something else. but I want it removed.
pls help......