Was using my new HTPC yesterday and things were going just fine. I had just installed the CIR drivers for it, and the remote started working perfectly in sage. Then I rebooted at some point, and got an error message before the OS loading that there was no keyboard. Both USB keyboard and mouse are installed in the back panel USB2.0 ports. I moved them to the USB 3.0 ports and they worked, but noticed I also no longer have a working ethernet port.
If I turn off power, the ethernet link light comes on, as soon as I power up, it goes off, and never comes on again.
Did my board die? Internal USB2.0 header works (the one next to sata port) but at least both rear USB2.0's and the ethernet jack wont work at all. I tried reinstalling all the applicable drivers in the OS and nothing helped. Even flashed the latest BIOS and nothing.