my mom's comp, running i believe 2000, has been having some problems. it'll suddenly shut off, and when you try to turn it back on, the screen sometimes loads partially, but right when you'd go to safemode, usually before, it'll just crash again. when this happens, the cpu light and power light on the tower stay on, while the screen's on standby and the computer does nothing. every once in a while, if you plug it back in and turn it on, it'll work for a while, then just do the same thing in the next couple of days and be out of commition for quite a while. so, any clues? is it trashed?