PC won't sound, strange buzzing sound

  • Thread starter Thread starter clarkgable
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clarkgable

Hi

Looking for some help here; I have just finished building a computer for my
family having built one for myself successfully, and upgraded it over the
last 3 years. After installing all the components on this new pc, I turn it
on and the cpu fan makes a buzzing sound for about half a second then stops.
I then have to wait a further couple of minutes before I get another buzz.
Nothing else ever happens with regards to the PC starting up.

Could anyone guide me on what the problem might be? Is it the CPU? Is it the
PSU? or something else?

The specs are:
GA-8SIMLP motherboard
256mb PC2100 SDRAM
1.7ghz Celeron
300w PSU
CD-RW & CD-ROM drives
FDD
2 HDDs
56k modem

Thanks in advance.
 
Hi

Looking for some help here; I have just finished building a computer for my
family having built one for myself successfully, and upgraded it over the
last 3 years. After installing all the components on this new pc, I turn it
on and the cpu fan makes a buzzing sound for about half a second then stops.
I then have to wait a further couple of minutes before I get another buzz.
Click to expand...

What exactly does "wait .... buzz" mean?
You just turn it off and let it sit or need to unplug from
AC or ??
Nothing else ever happens with regards to the PC starting up.

Could anyone guide me on what the problem might be? Is it the CPU? Is it the
PSU? or something else?

The specs are:
GA-8SIMLP motherboard
256mb PC2100 SDRAM
1.7ghz Celeron
300w PSU
CD-RW & CD-ROM drives
FDD
2 HDDs
56k modem
Click to expand...

Is it a decent name-brand or generic power supply?
Is is possible you have wires or extra/unused case standoffs
shorting out something?

Unplug all nonessential components and retry system.
Leave only CPU, heatsink/fan, 1 memory module, installed.
Unhook everything else from both motherboard and power
supply, including unhook of keyboard, mouse, usb devices,
and front panel led & switch wiring. Turn on board by
shorting the two power-on pins together with something
metal.

If possible (if there are jumpers) try to underclock the FSB
and/or memory.

When clearing CMOS, make sure to unplug AC from PSU.
Check that power supply's rear voltage switch is set
appropriate per your location.
 
Does the fan blades turn freely when it stops?. It could be bad bearing on
the fan. Why not just replace the fan? The're only $10 or so.
 
The buzz means that the fan goes to start, then stops nothing else works.
I'm in the UK, so I'm trying to use 230v voltage. I unplug from the AC and
then start again. And then the half-second buzz sound. Again.
 
clarkgable said:
The buzz means that the fan goes to start, then stops nothing else works.
I'm in the UK, so I'm trying to use 230v voltage. I unplug from the AC and
then start again. And then the half-second buzz sound. Again.
Click to expand...

Possibly a short on the PSU, sort of sound you get when protection circuitry
cuts in.
 
It WAS the PSU. Thanks for all the replies.


Andrew said:
Does the fan blades turn freely when it stops?. It could be bad bearing on
the fan. Why not just replace the fan? The're only $10 or so.
Click to expand...
 
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