i built my computer myself and since i have had it, it has had problems with freezing. when i do something like transfer all my music from my laptop to my desktop or do anything that requires more then usual processing the computer freezes. i don't get any error reports. i always have to just turn my computer off at the switch and start it back up. the last time i turned my computer back on it said "windows has recovered from a critical error" . what do i need to do to sort out the freezing problem.