For some reason, i cant click on the Stand By button in the Turn Off Computer menu (it gray out). The only buttons that's clickable is Shut Down and Restart. I even try my keyboard sleep button too but nothing.
Check the BIOS, look in the power options, are they disabled? I'm not familiar with the specific BIOS, RTFM if necessary. This likely isn't an OS issue, the OS doesn't detect the ability for the mobo to go into standby mode.
Possibly it's been changed in device manager/system devices, or the ACPI drivers are screwed.
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