The thing is... I take cmos battery out, and ram, for sometime, then put it all back together, and when I boot I have ethernet, then when computer running for some time I get code 45 in device manager for realtek pcie gbe family controller. ga-z68x-ud3p gigabyte motherboard. im at a loss.. ive done pretty much all the basic stuff, upgreded bios from f7 to f8, one thing to add is that I had graphics driver not responding one time the ethernet went out. ? SO PLS HELP. and also I have green light on backpane ethernet.! even when its code 45. I dont get why cmos and ram reseath fixes it.!