boot installation no error but nothing else either

Greetings,
Just mounted the ISO for x64 Beta 2 to DVD and booted it to a computer that did have Linux, but now is formatted (fixed the MBR, too). So, the DVD is apparently recognized, because it tells me that it's copying files over. Once the progress bar shows that it is complete, the computer restarts. If I boot from the DVD a second time, it just starts copying files again. If I don't boot from the DVD, I just get a message saying, "Missing operating system". If it helps, it's an AMD64 chip.

Sorry for the double post. The site gave me an error and said it wasn't posted.