I got same issue here. I tried following solutions, but no luck.

1. logged as member of administrator

2. logged as built-in administrator

3. If I disable anonymous access and choose integrated Windows Authentication, it always prompt for user id and password, even I turn on 'Make automatic login user & password', but it didn't load regardless I key in any credentials.

4. If I enable anonymous access and use member of administrator account, I can't see site setting nor any other toolbar to select.

5. I run IE as administrator, got the same result.