[antonyb]

Ho dato un'occhiata alla mobo, tranne cmos e hdmi spif non c'è altro, zero jumper, ho dato un'occhiata da bios e non ho trovato nulla riguard 5vSB..

Nlle impostazioni ACPI c'è questo:

Suspend to RAM
Use this item to select whether to auto-detect or disable the Suspend-to-
RAM feature. Select [Auto] will enable this feature if the OS supports it.
Check Ready Bit
Use this item to enable or disable the feature Check Ready Bit.
PS/2 Keyboard Power On
Use this item to enable or disable PS/2 keyboard to turn on the system
from the power-soft-off mode.
PCI Devices Power On
Use this item to enable or disable PCI devices to turn on the system from
the power-soft-off mode.
Ring-In Power On
Use this item to enable or disable Ring-In signals to turn on the system
from the power-soft-off mode.
RTC Alarm Power On
Use this item to enable or disable RTC (Real Time Clock) to power on the
system.