Migrated from dev to live intranet and admin section now has WSOD

When attempting to view any part of the admin section I just get to a white screen of death.

I migrated from the development environment to the live server and everything seemed to go off without a hitch and users keep operating business as usual. But when one of the admins try to get into the admin section it'll just load and load and load and then eventually timeout and be a WSOD.

I've cranked up the server values in the vain hope that I could just brute force the code to load (max_execution_time 120, memory_limit 256M) but no luck.

What's worse is I'm getting no errors through apache or php logs. (error_reporting = E_ALL, LogLevel debug). I do get errors on these logs, but nothing pertaining this problem at all, not even a maximum execution time error which were getting on the old intranet before the upgrade.

I'm at my wits end and I'd very much appreciate any help I can get. Please, before I go bald!

PHP 5.2.5, Apache 2.2.6 on a windows box.