Choose your harddrive to boot from.
My computer died and I just fixed it. I had to reformat everything and I am faced with the same problem, but everytime I turn on my desktop. I have to manually force it to boot from my HDD. The bootlist in my BIOS is in the correct order but it still wont boot windows automatically.
But do this:
1: When you manufacturer's logo pops up on your screen, hold f12
2: it should say to press a key to open boot settings, press a random key.
3: If #2 doesn't show up, highlight your HDD (hard-drive) using the arrow keys to move it up and down, then press enter.
It should load up after this. If not, let me know. This is what I have to do EVERY time I turn my desktop on now.