I have a 16GB USB 3.0 memory card, Lexar. I've used the MS usb/dvd tool to make it bootable. Downloaded 64bit of the W8 Release CP iso. I set my bios to boot in this priority USB HDD USB FDD HDD I have a Samsung Series 9 ultrabook, NP900X3B-AO1US I've used the same MS tool, same USB card to install W8 CP (non-release) back in March/April. Worked just fine on same laptop, not sure why its not working now. Any ideas? PS: I also tried my 8GB Corsair USB card too, same problem. Even further, I also tried another software called WinUSB Maker as well.