As many have experienced, i have a windows 7 computer that gets stuck in a boot loop from time to time. To fix it , i put in a windows 7 install disk and let the system load all the way to the screen that ask you if you would like to install or repair. At this point I just exit and eject disk and reboot. and it boots fine. my question is why does this trick work. I assume some system file gets reloaded/replaced when i launch the install disk. Any guesses?