Can't logon because the logon method

Can't logon because the logon method used in wrong

I have a Server 2008 installation running on Dell PowerEdge T610. I shutdown the machine & removed one of the removable harddrive to check its details - Insert it back (in shutdown mode) and restarted the server.

After the restart now the server is not allowing me to login - and it give the message as - "Can't logon because the logon method you are using is not allowed on this computer".

I tried to login while network cable removed - and with network cables - gives the same message. Also, one thing I noticed is that during the startup screens - it now shows IPV4 settings as 0.0.0.0 which is wearied, as the server had IPV4 settings and was in the network before.

I tried to restore the image-which i took in the past - but the problem is that I am unable to access the DVD drive until I login.

can someone help and advice on what shall I do? to login to the server. 

Appreciate for all your valuable time and suggestions.