Bootcamp installation stuck at "Expanding Windows Files (0%)..."

Using a mid-2007 13inch macbook to install Windows 7. I burnt an ISO to a dvd and used that to install windows. Earlier it was saying that I needed a CD/DVD driver, but it suddenly works. It's not frozen, the dots are moving and the cd drive is making sounds. Help!

Actually, as I was writing this post, it came up with an error saying "Windows cannot install required files. The file may be corrupt or missing., Make sure all files required for installation are available, and restart the installation. Error code: 0x80070017" I'm not sure if this is in the scope of this forum or another, so i'll add it here just in case.