I'm saying running the DVD inside the VM... I don't know how to explain this to you, but you installed Windows in the Virtual HD using a DVD or a disk image (.iso, it's the same, doesn't matter), so it's like doing that again, you are not reinstalling but you have access to the virtual HD from the DVD/image if you boot this DVD/image inside the Virtual Machine by setting the boot order in the VM for DVD first.
Does that make sense to you? I dont' know how else to explain, if it doesn't I'm afraid I can't help you.
Your HD is a file, but for Windows it's like a real hardisk and requires drivers, it's quite possible the drivers it's using are the issue.
Last edited: Mar 18, 2013