I ordered a low-end kit from tigerdirect.com, which included an MSI K9N6PGM2-V2 motherboard. Right out of the box, it would not post if I put DIMMs in each of its slots. After much back-and-forth with the manufacturer, they agreed it was defective. I was able to return it to tigerdirect for replacement since it was within their 30-day limit.
The replacement board worked for about two months, then things got really unstable. A few minutes after that, no more network connectivity: the onboard network interface has failed. This is a Linux/Windows dual boot arrangement, so I booted into the hated Windows to see if the networking issue was somehow software-related. Same result: no network.
I called Tiger and complained as politely as I could: it isn't right to be selling junk like this to your customers. Give me a credit against a board that doesn't suck. No can do, they said. Take your case to MSI. Now, I know MSI will probably honor the warranty and exchange the damn thing. Do I really want a third junk motherboard? I have already invested an extra $25 for an add-on card to provide an additional SATA port.
Option: go spend about $20 on a NIC and see if it works.
I have never had a problem with MSI and I have been using them for years. But after so much trouble that you are going through right now. I would say go on and do what Almartin said and send the board back to MSI and buy that ASUS Board