Si tienes la versión Celeron, prueba a actualizar la nueva BIOS que ha salido:
BIOS Version 0032 - FYBYT10H.86A.0032.2014.0414.1437
About This Release:
Date: April 14, 2014
New Fixes/Features:
o Windows 7 - xHCI mode is set to "smart auto"; Legacy Boot is enabled and
greyed out; Wake on USB from S4/S5 is disabled and greyed out
Added Wake on USB from S4/S5 support.