I have a samsung NP530, it has a 16GB caching drive, which unfortunately I could not remove. anyway, I installed windows 7 onto the newly installed SSD, but if I remove the USB installer (which I had used Rufus to make), it will refuse to boot, saying BOOTMGR cannot be found. Only when the USB key is in it will boot. I tried to format the 16GB caching drive as drive R and the SSD as drive C, but sitll the same. Even worse when I run startup repair it will say windows is in drive D... Help, im so confused regarding this already... Thanks