Re: Dimension 8400 noise when cold


"J David Ellis" <nospam@xxxxxxxx> wrote in message
news:9OydnTR1zbEsi4nbnZ2dnUVZ_vumnZ2d@xxxxxxxxxx
I've read a lot of articles here about 8400 fan noise, but haven't seen
the following symptoms described. Before I call tech support (it's still
under on-site warranty), I'd like to get some theories about what the the
problem is.

If the two-year-old 8400 has been in standby or power off overnight in a
room that's roughly 50F or colder, when it starts there is a
grinding/whirring noise that sounds like a motor bearing beginning to
fail. If I restart a few times the noise does not disappear. But if i let
the high-pitched grinding continue for ten or fifteen minutes and then do
a power-on restart, the noise is gone and remains gone so long as the
computer is operating at normal room temperatures. The 8400 is in use all
day every day and the problem has become more persistent over a two-month
period.

Has anyone had the same symptoms with an 8400? Any idea what the cause
might be?

--David


Open the case before you boot it next time (cold) and look at the fans
first:

CPU case fan (under the green shroud ), power supply fan (either can be
listened to via the back of the tower), or the video card fan if your card
has an active heatsink fan (you can try temporarily stopping this fan with a
pencil eraser or perhaps the plastic end of a pen).

Also look for cables rubbing the case fan or the video fan.

Beyond that, look/listen in the direction of your hard drives or
optical/CD/DVD drives......

Stew


.

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