Hang after reboot ( Bootcamp Assistant )

I have a mac, which I want to install Windows to.
After running the bootcamp assistant, my mac reboots, and then hangs.
If I reboot again, into the startup menu, I see two DVD disk's. One called Windows and one called EFI something. If I choose the EFI something, I get into the windows installer, but it will not let me install to the bootcamp partition. If complains about a mix of partition types. If I choose the Windows disk, I am told there is not bootable device.
If I remove ALL partitions form the harddrive, using the windows diskpart utility, then I can install windows. But that is no great help, since I also want OSX.
I am running 10.8.2, and have triede both Windows 7 and Windows 8.

The EFI option is the wrong option to choose, you need to choose the Windows option. But because you used diskpart on the disk, which doesn't understand hybrid MBRs, you no longer have the proper hybrid MBR. That's what Boot Camp Assistant creates, and any other tool on the planet has a high chance of damaging.
So you need to use Disk Utility to create a single new partition, meaning go to the Partition tab, click "1 partition" instead of the default "Current" option. Install OS X. And then follow the Boot Camp guide step by step.

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http://jrause.com/blog/?p=165http://jrause.com/blog/?p=165
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I rebooted many times with no luck.
I tried the windows install CD again. This time repair offered to replace all the files that were different from the install media and I took this option. Still had hang problem after reboot. Tried safe mode and a few other options.
Searched the web (from another computer) and found only one mention of a similar problem but it was about iTunes 4.1
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