EVGA 759 Problem

For some reason the mobo usb and network ports have stopped working? Cleared cmos, set back to default settings and same result. The usb keyboard works in bios, but once system starts and it gets to login screen, mouse and keyboard do not work. Plugged in a PS2 keyboard to get to desktop and no usb no internet. No audio either.

unplug the keyboard for a few secs and plug it back in

Check if all USB options are enabled in BIOS. If they are it sounds like you might have a problem with the south bridge. Load defaults, restart and check again. If that fails try a BIOS update.

Changed out hdd for 760 and everything working. Looks like the Win 7 for the 759 has a problem.