I'm running into the same error msg. I'm using a mobo from portwell (wade8012) and booting off of a 2.5 inch SATA drive. I've changed my USB setting in the BIOS and have used the "nousb2" flag. All I managed to do with "nousb2" is disable my keyboard (reboot fixed that but I'm still running into the same issue). It's possible I'm doing something demonstrably wrong but I'm not to keen on that premise. Any help is greatly appreciated.