In comp.sys.ibm.pc.hardware.misc
wrote:
> Here's what I have:
> Xeon 5160 3.0 GHZ CPU (just one)
> Gigabyte GA-7VCSV-RH board
> 2 GB Kingston RAM
> PC Power Cooling 'Silencer 610' power supply
> Power into the board with CPU and memory (no PCI cards) via connecting
> both
> 24-pin cable and aux power cable: nothing.
> Unplug 24-pin cable and plug it into a power supply tester: all lights
> come on fine.
> Leave aux cable in, keep 24-pin cable in tester: system turns on (CPU
> fan spins,
> no video though).
> I've replaced the board once. Can't be a bad board.
> PC Power Cooling people tell me PS is OK, tester verifies this.
> What else could the problem be?
> Do I HAVE to put 2 Xeon 5160s in the board? Currently I'm using only
> one (yes,
> it's in the right socket and in the correct orientation).
> Or is this 5160 not compatible with the board?
> Gigabyte said it was.
> Or is it just a bad CPU? How can I test THAT without getting the
> whole system to work
> to begin with?
An LED power tester does not tell you enough. For example +5VSB
cpule be too low. Had this recently with a PSU, were +5VSB
only had 4.1V, not enough to turn on the mainboard, but
probably enough fpr a cheap PSU tester, since it will likely
not test this voltage in a meaningful way.
Plug in both connectors to the maonboard and then measure +5VSB
(should be violet). Also, wothout swithcin the board on,
it will likely not do anything. Second step is to connect the
power switch and see whether you can turn it on that way.
Arno
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