Updated bios from 1.0 to 1.3 for a75ma-g55 mobo, in BIOS setup under USB configuration
ONBOARD USB 3.0 CONTROLLER missing and am unable to boot with wireless microsoft mouse and Keyboard pluged in boot hangs with B4 on bottom right hand corner. Revert to Bios 1.2 USB 3.0 controller still missing but wireless keyboard and mouse works.