A coworker brought me an HP Elitebook 8540p to diagnose. It is running Windows 7 Pro. When it boots, it comes up to a blank screen with no shortcuts and nothing else displayed other than the mouse cursor. The cursor moves just fine, so it is not locked up. It will not however give me any other options, including user login prompts. Just a blank black screen with the movable cursor. I see no hard drive activity at that point, so it doesn't appear to be processing anything.
I can however boot to safe mode, and I am able to login. No errors showing in safe mode.