Long-time Unix sysadmin, just getting started in the Windows world, here:
I have a Windows 7 Enterprise machine. A recent system update must have gone pear-shaped, because now when I try to log in as DOMAIN\user, I get "Trust relationship has been lost with domain controller".
I gather that this means that the workstation is failing to authenticate properly to the Active Directory domain controller. Normally, I'd log in as the local admin and reconnect. But I don't know the local administrator password, and I never set up a local account for myself.
I've created a system recovery disk and tried to restore from the save points created before Windows updates. None of them work: they all restore properly, then fail with "Unknown error". I've tried half a dozen save points going back to early May.
Any ideas on how to get this machine reconnected? I have physical access to the machine; I have administrative access on the domain controller. I don't have Windows install disks (do those still exist anymore?). I don't have the password to any local accounts, though I can boot from a repair CD and get access to local files.