I'm having problems loading windows xp thru bootcamp. whenever I cold boot and hold down the option button, the screen where i choose which version of windows to load (config 1 or parallels), the computer hangs. no keyboard response and I must reboot the computer. the only reliable way of getting into bootcamp I have found is that I must boot into OS X, and then choose System Prefs \ Startup Disk \ Choose the win XP partition and press the restart button. any ideas?