Hyper-V DC shows only black screen at Ctrl+Alt+Del screen.

As the title suggests, clients DC (a Hyper-V VM, Windows Server 2008 R2) shows only a black screen after the Ctrl+Alt+Del prompt is flashed up. if I hit Ctrl+Alt+Del the logon background will appear shortly, then black again.

I can't log on by just typing the password.
I can't remote into it.
DHCP and DNS services are down.

I can ping the server.
I can see shared files.

I have tried safe mode.
I have tried last known good configuration.
I have exported the VHDs to a dev server and still black screen.
I have run chkdsk on the HDDs.

Any suggestions? Your help is truly appreciated!
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Dougj182Author Commented:
Fixed the issue by restoring the registry files from a backup.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.