6BDU not recogising processors properly...

Hello, I've got a dual PIII box that runs off a 6BDU. It hasn't been
running for a couple of months and when I started it at the weekend
it's not recognising the processors or memory properly.

On boot up is claims that it's got two PIII 125MHz chips, however, when
I go into the BIOS it's correctly set to be 500 MHz (100*5). Anyone
seen this kind of problem before...?

To make matters worse it's not recognising the memory I've got properly
either. If I put one SIMM it will either work or not even boot. If I put
two in will register 256Mb and give a warning about not finding SPD in
slot 2. If I put three in it will register 512Mb and give a warning
about not finding SPD in slots 2 and 3. All SIMM's are 256Mb PC-133. I
tried replacing them all with 128Mb PC-100 and it wont boot and I can't
get to the BIOS.

So, what is this SPD thing?

Thanks,

--
bob [at] bobarnott [dot] com http://www.bobarnott.com/
------------------------------------------------------------------------
"Crash programs fail because they are based on theory that,
with nine women pregnant, you can get a baby in a month."
-- Wernher von Braun