Noisy power supply fan

Do you have a question? Post it now! No Registration Necessary.  Now with pictures!

Threaded View
I recently got an old HP d300 computer. It's been working erratically
- about one or two BSOD's a day for a couple of weeks. I checked the
memory (31 passes of memtest86+) and changed the hard disk (it needed
it anyway), but still get crashes.

I've started noticing something in the case is making a whirring
noise, which I traced to the power supply fan. I'm sure it's gotten
louder very recently since I didn't notice it before. One perculiar
thing, I turned the box off for the night and when I tried to boot in
the morning it took about 10 tries. Each time the boot got a bit
further until it finally made it all the way.

Can anyone diagnose this problem???

Re: Noisy power supply fan

On Mon, 16 Mar 2009 17:43:37 -0700, spasmous2 wrote:

Quoted text here. Click to load it

All those fans can be lubricated, and all fans need lubrication after a
while. If you've never done it before, there are step by step illustrated
tutorials out there that can help you.

Re: Noisy power supply fan

On Mon, 16 Mar 2009 17:43:37 -0700 (PDT), spasmous2

Quoted text here. Click to load it

If it is a sleeve bearing fan, lube it.  If it is a ball
bearing fan, replace it.

Quoted text here. Click to load it

That seems like a second, unrelated problem.  Normaly that
is caused by a part susceptible to a temperature change,
possbily a power supply (most likely), motherboard or video
card with marginal capacitors, a cracked solder joint or PCB
that makes intermittent contact depending on the temperature
vs thermal expansion of contacts.

If all else fails,  you will need to swap in known working
parts or vice-versa, swap questionable parts into an
otherwise known working system.

A visual inspection is a good start, look for loose cabling,
cards, or failed capacitors.  Check CPU with prime95, and
memory with memtest86+.

What exactly do the BSODs say?    They list a stop code,
maybe a file too, which are often good hints at what went

Site Timeline