After hours of searching I found the solution. It seems that you cannot install Windows via Boot Camp if you have an MCE Optibay (second hard drive) installed in place of the optical drive, even though I originally installed Windows with the second hard drive installed. After I updated Lion, it wouldn't work any more. So I pulled out the second hard drive, put the original superdrive back in, and installed without a problem. Once the install was done, I pulled the optical drive out, replaced it with the hard drive and it's still currently working. Weird.
So if you have a second hard drive installed in place of the optical drive, you might have problems installing Windows via Boot Camp.
I have my original optical drive in place and I am having this issue. After restarting SEVERAL times I finally got into the windows installer, then as soon as I clicked format on the bootcamp partition it went black again and wouldn't come back!!! WTF is going on??? I have installed Win7 on all my macs many many many many times!!! I know what I'm doing!!!
This started for me yesterday. I decided to partition my main SSD to install Mountain Lion Beta to test it. It started up and just kept restarting finder. So, seeing that its too buggy to even run I deleted the partition. Which corrupted my bootcamp install. So I went to reinstall and I get this damn black screen!!!!
Is it possible that Mountain Lion screwed up my EFI??? If so, how do I fix this??? I really need to get windows back on this system!
Anyone that knows how to fix this PLEASE HELP!!!
BTW, I've had no problem with Boot Camp in Lion at all, since day one! I've installed it several times on several macs already. This is a brand new problem for me.
This is obviously a weird firmware problem with communicating to the graphics card. Has anyone had success setting up boot camp using parallels?