I have Asus X200MA Notebook with Windows 8.1 64 Bit with UEFI mode enabled. On this notebook I find that the only way to enter the UEFI Setup is from within Windows 8.1 Change PC Settings (Restart to UEFI Setup) or pressing F2 only when Windows 8.1 is restarted. I have tried both ways Fast Boot Enabled as well as Disabled.
i.e. F2 key or DEL or Escape key is ineffective on Cold Boot. I raised this query to Asus Support but they suggested to check for normal working of F2 key or to update the Firmware.
I even tried powering on with F2 or DEL or Escape key already pressed but on Cold Boot laptop does not enter UEFI Setup.
Does anyone know if this is expected functionality on Asus laptops with Windows 8.1? Surprisingly even Asus Knowledge Base here refers to Windows 8 Change PC Settings option only and nothing about Cold Boot.