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Thread ID: 111026 2010-07-10 23:04:00 Random Beeps bk T (215) Press F1
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1117711 2010-07-12 03:16:00 TPM is this (en.wikipedia.org)

Disable the NICs in the BIOS. See if it makes a diff. Since you're not using them
Speedy Gonzales (78)
1117712 2010-07-12 03:42:00 TPM is this (en.wikipedia.org)

Disable the NICs in the BIOS. See if it makes a diff. Since you're not using them


The TPM security chip is not activated.
bk T (215)
1117713 2010-07-13 06:43:00 We're getting closer.

I removed the case lid, pressed the Power switch, keep my eyes on the mb and noted the following:

Just after the normal POST beep (one short), the CPU heatsink cooling fan spins, stops, spins, stops ... and the annoying beeps starts when the fan stops, stops when the fan starts ... the beep stops when the fan starts spinning normally

What could be the cause for the fan to behave like this? Could it be the fan itself is faulty (not able to spin up when it's cold)?

Suggestions, please.

cheers
bk T (215)
1117714 2010-07-13 07:41:00 Could be a fan fail warning of some sort? Check under power management in the BIOS. It's not uncommon for some boards to not spin the fans up 100% while POSTing. wratterus (105)
1117715 2010-07-13 09:24:00 What can be happening is the fan connection is losing contact.

Some motherboards will protest if they cant detect a CPU Fan. If its beeping when the fan stops spinning, at that moment there is possibly no contact, and you get a warning beep, when contact is made the beeps stop.

This could be a faulty fan connection or a faulty fan, OR the connector on the Motherboard faulty.

Some mother boards, you can turn off this warning in the BIOS, BUT doing so is not a good idea -- If the fan fails completely other heat damage may occur.

First thing I'd do, disconnect the power, remove the fan connection, clean the contacts on the board and fan. If its still playing up change the fan.

What wratterus suggested is different to a fan losing power, some Motherboards have a fan control to regulate the speed, slower or off when cold, faster as things heat up. (They still have power and are detected by the Board)

Gigabye call it "Smart Fan control" its under the PC Health settings in the BIOS. ( from memory)
wainuitech (129)
1117716 2010-07-13 10:45:00 Could be a fan fail warning of some sort? Check under power management in the BIOS. It's not uncommon for some boards to not spin the fans up 100% while POSTing.

Yes, this board has those functions under PC Health Status - CPU FAN fail warning is Enabled; CPU Smart Fan Control is also set to Enabled; CPU Smart FAN Mode was set to Voltage but has then changed to Auto (remembered it was originally set to Auto but didn't seem to work). Will see the result tomorrow when the comp is started when cold - as my teenage daughter is using it now.


What can be happening is the fan connection is losing contact.

Some motherboards will protest if they cant detect a CPU Fan. If its beeping when the fan stops spinning, at that moment there is possibly no contact, and you get a warning beep, when contact is made the beeps stop.

This could be a faulty fan connection or a faulty fan, OR the connector on the Motherboard faulty.

Some mother boards, you can turn off this warning in the BIOS, BUT doing so is not a good idea -- If the fan fails completely other heat damage may occur.

First thing I'd do, disconnect the power, remove the fan connection, clean the contacts on the board and fan. If its still playing up change the fan.

What wratterus suggested is different to a fan losing power, some Motherboards have a fan control to regulate the speed, slower or off when cold, faster as things heat up. (They still have power and are detected by the Board)

Gigabye call it "Smart Fan control" its under the PC Health settings in the BIOS. ( from memory)

I will clean the contacts as suggested tomorrow before starting up the computer. I'm however, a little puzzled as to why 'poor-contacts' only 'lose' contact when cold? It never beep when the computer is running, even left it ON over-night when I'm downloading some large files. I'm more inclined to suspect the FAN itself that jammed when the temp is low.

Anyway, will keep you folks informed of the outcome tomorrow. :thanks for all the ideas, suggestions, etc.. etc.

Cheers
bk T (215)
1117717 2010-07-13 10:48:00 Sounds like the PSU that was in this. It was making grinding noises in the morning (when it was cold - it was coming from the PSU - probably the fan). Then disappear sometimes, you couldnt hear it.

That didnt last for long (about a week). The other day it blew and blew a fuse lol. I had to replace it with the PSU that was in the other PC.
Speedy Gonzales (78)
1117718 2010-07-13 11:09:00 Sounds like the PSU that was in this. It was making grinding noises in the morning (when it was cold - it was coming from the PSU - probably the fan). Then disappear sometimes, you couldnt hear it.

That didnt last for long (about a week). The other day it blew and blew a fuse lol. I had to replace it with the PSU that was in the other PC.

Have seen quite a few PSU fans (especially in older machines) having that sort of thing, too. Applied a little bit fo WD40 usually eliminates the noise.
bk T (215)
1117719 2010-07-13 11:32:00 why 'poor-contacts' only 'lose' contact when cold? When cold metal / Joins shrink, when the temp comes back up it expands again.

IF its this thats causing the problem, it doesn't take much heat to cause expansion, just enough to warm the metal, and make contact again. If the PC is running continuously the heat is still there. You may find its something like one wire in the Fan plug simply not connecting correctly.

Touch the Heat sink when the PC has been running for a while - you will find its "Warm" to touch.

Touch the back of a Graphic Card when the Fan fails-- That almost burns (if the card has not shut down before hand)
wainuitech (129)
1117720 2010-07-13 11:37:00 Have seen quite a few PSU fans (especially in older machines) having that sort of thing, too. Applied a little bit fo WD40 usually eliminates the noise.

Its not an old PC. It was a crap PSU anyway lol. I was planning on getting another PSU anyway (but not this soon). Since the PSU sits on the bottom of the case. And the connections are too short
Speedy Gonzales (78)
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