Have you been hit with the login error: The trust relationship between this workstation and the primary domain failed.
GOOD News, there is a fix (If you can get into the machine – see below)
Just change your computer password using netdom.exe!
netdom.exe resetpwd /s:
Can’t log in because you don’t have the local admin password? Try this trick:
This should work with any credentials recently used on that machine as they will be cached locally.
Thanks to: http://implbits.com/active-directory/2012/04/13/dont-rejoin-to-fix.html