Here's the problem...
Your work system was configured by your IT staff for a reason (no idea what
that was, etc.)
This was done before giving you said system and they probably had you
logging in (obvious as an users with local system administrator privs using
a domain username no less) using cached credentials for a reason. Their
main mistake was giving you local administrative rights. This gave you the
ability to do what you have done. You do not know any local user accounts
(particularly administrative level local accounts) and you went ahead and
disjoined the domain using your cached logon domain account - which became
null and void the moment you decided to reboot after taking said action.
Your choices are:
1) Call your IT staff. Tell them what you have done and see what proper
action you should take.
2) Google for a password hacking application so you can hack the local
administrator password and hope that there was no encrypted files/special
things setup on the system that depending on the fact it was a member of the
domain and that you were using that cached account and then later - when you
can - call your IT staff. Tell them what you have done and see what proper
action you should take.
In general - the only 'valid way' (in the end) out of this is to call your
IT Staff. Tell them what you have done and see what proper action you
should take.
--
Shenan Stanley
MS-MVP
--
How To Ask Questions The Smart Way
http://www.catb.org/~esr/faqs/smart-questions.html