So, I was removing some programs in Windows and I restarted after downloading some updates. I get the infamous hal.dll is missing or corrupt, please reinstall this file. My problem is that I installed Windows XP using Bootcamp before it expired. Now that it is expired, I can no longer hold Option and get back into Mac. Ive tried searching for answers and pressing many different keys on startup, as well as inserting my Windows XP disc and so far, I am stuck with this error coming up every time. I can't get back to getting Mac OSX to load (I have tiger) nor can I get Windows to load. My computer is dead in the water. Any solutions?