Forum discussion tagged with m6400.
  1. D

    Dell Precision M6400 fans revving repeatedly.

    Out of the blue today the fans on my dell started revving nonstop, and I mean multiple revs per second. All of my temps are normal, and there is no excess system resource usage to speak of. I don't think it's fan failure since it sounds like both fans are doing it. Not only is it concerning...
  2. E

    M6400 Won't Boot

    Screen lights up at power up. After various amounts of time (a few seconds once, but mostly a minute or so) it beeps 2 times. I've reseated memory and tried it with different sticks. No change. Disconnected the CMOS battery......and plugged it back in. No change