I have a Server 2008 machine called OTTO I recently, by mistake, booted up an old machine, also called OTTO (the hardware was unstable, so the new one was set up to take it's place)

I shut down the old machine, turned it off, and recycled it (it won't ever be back on)

Now, whenever i try to log in to the real OTTO with the domain account (mydomain\Administrator) i get the following error:

The security database on the server does not have a computer account for this workstation

What can I do to fix this?

It doesn't appear in active directory any more I've added it, but I'm guessing this had no effect, due to a different SID

I can log in as the local administrator however