I bought and installed OS X Leopard and set up boot camp with windows xp. I've been using boot camp fine for a few months until just recently my macbook is stuck in windows xp. I try to restart windows and when the grey screen pops up usually I hold down CTRL and can switch between OS, but recently the grey screen pops us and I hold down CTRL and nothing happens. I just goes boots windows. I've tried both shutting down and restarting windows with no luck. Any suggestions?