Windows Xp keeps freezing... Xp freezes and you then have to reboot. During a freeze the screen locks(everything is open you can see the cursor, but mouse & keyboard are locked(ctrl +Alt+delete) does nothing)...You have to reboot!! The freezing seems to occur randomly... I have replaced memory and the video card has been swapped out (both did not fix). I have also reformatted my windows partion of my hard drive(20gb (13 and 7 partion))... Computer --- Win xp... FIC mobo, 800 AMD duron, 512 pc 133 memory, ATI 7500 64ddr video.