I just upgraded from my old Athlon 1400 system with WinME to a new a64 system with WinXP.   I'm having trouble with subspace/continuum, it crashs my system.   What happens is I'll be playing for a bit then all of a sudden my the screen goes black, my speakers hiss, and my system reboots.  This doesn't happen every time, but it does happen often.   Any idea what's causing this ?   I haven't  experienced this type of crash with any other games.