Dual Boot, Windows doesn't boot.

Hi there,
Firstly, I'd like to apologize in advance if this has already been answered somewhere, but I couldn't seem to find it anywhere.
Yesterday, I tried to dual boot Windows 7 on my iMac with the latest version of Lion. I used Bootcamp and everything went according to plan untill I had to install Windows. My Mac restarted and began to install Windows, but after a while of installing, the disc stopped running and everytime I heard it trying to get back running, it was stopped by a weird noise, as if something was grinding onto it.
This kept going for a minute or two, when I decided to turn it off, since nothing was happening. After that, I started my Mac again and after a white screen, the only thing it shows is a black screen with a little type cursor in the upper left corner. I've tried to reboot it many times but I can't do anything, if I take the disc out, the only thing I get is a white screen, it doesn't go back to the normal Apple logo.
If anyone has some tips on where i should go with this, it'd be greatly appreciated!

You need to delete the boot camp partition and start over. Use Book Camp Utility or Disk Utility to remove the partition.
What happened is when you installed Windows and it did not finish installing the OS and will keep trying to boot to that partition and finish. Until the OS install is finished the Mac is flagged to boot automatically to that partition. This is why you are seeing the black screen.

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