Can't bring Network Name on line

Cannot cannect to configuration database error was shown when trying to access site.

Checking I found Suddenly clustering isn't function. When I look at the dependency report, the Network Name is
offline but its IP address is online and pingable.

The event viewer shows several of the following:

==============
Event ID: 1205; The Cluster service failed to bring clustered service or
application 'Cluster Group' completely online or offline. One or more
resources may be in a failed state. This may impact the availability of the
clustered service or application.

==================
Event ID: 1069; Cluster resource 'Cluster Name' in clustered service or
application 'Cluster Group' failed.

==================
Event ID: 1207; Cluster network name resource 'printserver' cannot be
brought online. The computer object associated with the resource could not be
updated in domain 'domainname.com' for the following reason:
Unable to obtain the Primary Cluster Name Identity token.

The text for the associated error code is: An attempt has been made to
operate on an impersonation token by a thread that is not currently
impersonating a client.


The cluster identity 'SPSERVERCLUS$' may lack permissions required to
update the object. Please work with your domain administrator to ensure that
the cluster identity can update computer objects in the domain.

==========
Event ID: 1205; The Cluster service failed to bring clustered service or
application 'Cluster Group' completely online or offline. One or more
resources may be in a failed state. This may impact the availability of the
clustered service or application.

Environment: Windows SQL Server 2008 R2.

Did any updates created and issue?

Checked DNS name is mapped to correct IP address.

AD has no expired credentials.

Surprisingly when turned 1 DB OFF, we can connect to site but still this error persist.

I've been googling this for a while, but haven't found a solution.

Please recommend the appropriate forum for this.I'd
appreciate any ideas. Thanks.