I am re-installing Windows 8.1 on my nans laptops and i have no idea how to get into the boot menu i have pressed all the useral keys and tryed asking google for answers but nothing the only boot menu tells me to boot into windows or the BIOS and in the BIOS itself there are no options for changing boot order i have tried to disable security features you name it and no luck! So can any one help me on this?