Hi, I've made legacy bootable installation pendrive for Windows 10, 64 bit. It wouldn't boot on my Samsung 439 laptop. No error message, just no OS is found; my laptop poses a while then moves on and boots from the HDD. Nonetheless: This pendrive does boot on another computer; I can boot all other programs, including Windows 8.1, 64 bit installation on my laptop. My BIOS is Phoenix SecureCore(tm) NB Version 06UY.M002.20100719.XW, the other computer that booted it showed Bios 4, 5, 6. How can I install Windows 10 on this laptop? Thanks a lot.