So please tell me again - what happens when you have just the motherboard,
the CPU with cooler, video card and memory plugged in - BTW not sure if I
understood or not but several motherboards have 2 power connectors on them
to the PSU.
"Jim" <> wrote in message
news:Xns9844EB9A1DE7DJoconnoraspsmnet@216.196.97.1 36...
> Boe ,
>
> Sorry - I'll clarify...
>
> I did pull the motherboard from the case, no good.
> I also hooked it up to a different power supply - nada.
>
> When I diconnected the fan, I had a seperate blower running over the
> heatsink (basically a ducted window fan directed at the motherboard), and
> as I was only leaving it on for 5 seconds at max to see if it would work ,
> I was willing to give it a try. Your caution is quite correct though, a
> lot of heat is a killer.
>
> When I say disconnected power to CPU, I mean the seperate 4 pin ( 2
> ground,
> 2 5v) connector block that inserts into the ATX MB near the CPU. It
> describes this as a power input for the CPU on both the motherboard and
> power supply manuals. I didn't know what else to call it.
>
> The drives were OK, but this happens even without a drive plugged in too.
> While it is possible that I plugged in a drive power supply wrong, it
> would
> have been the first time in about a very many times that I have connnected
> a similar drive, and I don't recall needing an inordinate amount of force
> to insert or remove the power connnector, which I would have expected if I
> jammed it in wrong in the first place.
>
> ? Any tests/things I can do to narrow this down?
>
>
> Jim
>
> "boe" <> wrote in
> news::
>
>> Could be a bad power supply
>>
>> Not sure what you meant by disconnected powersupply to CPU but NEVER
>> run a system with the fan turned off for the CPU.
>>
>> I build A LOT of systems and occasionally one just doesn't behave.
>> When all else fails, I pull the motherboard from the case, and put it
>> on the myler bag it comes in, plug in the memory, power, CPU (WITH
>> FAN) and turn it on. A lot of newbies tend to plug in a drive wrong
>> which can kill a system.
>>
>> "Jim" <> wrote in message
>> news:Xns9844B122CF697joconnorNOSPAMaspsmn@216.196. 97.136...
>>>I am putting together a basic computer for our office, nothing special
>>> so I bought what looked like a reasonable cpu/motherboard set.
>>>
>>> Specifically :
>>> CPU : Intel P4 524 3.06 G 1 MB cache 533 FSB socket 775
>>> MB : MSI PM8M3-V Has 24 pin ATX plus 4 pin CPU power connectors
>>> Memory : 2 Ultra 512 PC 3200 400 mhz DDR2
>>> fans etc and a case with a 330 watt atx supply.
>>> using the integrated video, audio connections, no cards installed
>>>
>>> I have put together a number of home-builts and expected no real
>>> problems. Famous Last words.... When everything connected
>>>
>>> 1st try: the fans (power, cpu) spun up, and the usual start messages
>>> on the monitor for about 10 seconds, then everything shut off.
>>>
>>> Tried again, would kick in for 2 seconds or less, often not long
>>> enough to get the fans to full speed - then shut off.
>>>
>>> After 2-3 like this, nothing would happen unless I either cleared the
>>> CMOS with the jumper - then back to 1-2 seconds of activity, or
>>> disconnected the 4 pin power supply to the CPU : then the fans would
>>> kick in and run for as long as I wanted, but , obviously - no monitor
>>> activity as the CPU was not powered. Happens with all of the drives
>>> unconnected, memory out/swapped.
>>>
>>> Hmmmm - did I fry the CPU or the motherboard, is the power supply
>>> shorting?, ? grounding issue ...
>>>
>>> Tried the following:
>>> Pulled out of case to check for case grounding - no change.
>>> Connected to different power supply, no change
>>> Got a new (same type) motherboard - no change. Didn't even get
>>> the
>>> 10 seconds of use like the first. Is the CPU shot, or something
>>> else??
>>>
>>> Thanks for looking at my tale of woe. Jim ()
>>>
>>
>>
>>
>
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