I have a perfectly functional Lion install, It's been working
fine for the past couple of months, however I decided I wanted
to partion my hard drive and install Windows 7 Ultimate on the
other partion.  The only problem is that I lack an optical
drive, so I used the windows USB DVD tool to create a bootable
Windows USB installer. Installing Windows itself was fairly
simple, however after I created my user account, and as the
desktop was loading, my computer did a reboot. When I went to
load Windows, it just hung at the "Loading Operating System...",
after multiple reboots, the same thing would happen every time.
I even used a chameleon boot loader off of a usb to try loading
it, and it just hung.  I then went into my motherboard bios
settings, and changed the SATA mode from AHCI to IDE. Which
caused Windows to boot perfectly fine into the desktop.(With no
drivers, bar some poor quality audio ones). However when I am in
IDE mode, I am unable to boot into OSX.  I did some research and
found out that Windows 7