I just purchased this HP computer and install Vista 32bit Enterprise version on. This computer was joined to the domain but every time when a domain user tries to login, I kept receiving this error message: The trust relationship between this workstation and the primary domain failed. The computer won't let the user login with the above error. Any suggestion is appreciated.

Hi, Generally, this error occurs because of a DNS lookup failure or duplicate computer accounts in this domain. I suggest disjoining and rejoining the domain to check the result. Hope it helps.