This happens because you have fast boot enabled in bios and in win 8/8.1 the boot is very fast it's counted in milliseconds.
Go to your pc setings/ change parameters/ update and restore/ restore/ reboot now/ turn off. Than power on your pc hitting esc or f2 button!
If you want to get opportunity to access bios on every boot disable fast boot and save setting in bios. But I think there is nothing to do in it because laptops bioses are limited for user settings and are locked almost everywhere. Also I don't recommend you to flash unlocked bios and change settings in it because risk of bricking your laptop is very high!
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