Once started, it will run fine, for days on end. But once it shuts down, restart after an auto update for instance, it dies. When I try to start the computer, the fans sputter a little, but never get up to speed and nothing ever shows on the screen. The remedy is unplugging the computer and plugging it back in. No time needs to pass, just unplug and plug back in, hit the power button and the computer boots normally.