GA-6VTXDR-C won't post with 2nd CPU

[zedhex]

I have a used 6VTXDR-C board from gigbyte with a curious problem: It will boot and POST just fine with one cpu, but when I add the other cpu it wont POST. The cpus are identical PIII-S 1.4Ghz SL5XL with the 512KB L2 cache. These chips are supported by the board, and they do support SMP. At first I suspected that it was bad caps, so I had all the caps replaced (except for the known good Rubycons). The result was absolutely no change at all - it still only POST's with one cpu. Both CPU's are new (I upgraded from an old single Celeron), and they will each work when placed in the first socket. There are no burns or deformations around the VRM mosfets, but one of the rings (I am not a real hardware guy - I'm a programmer) with wire wrapped around it is very slightly discolored. Has anyone any ideas? Could it still be the remaining Rubycons that are fried - how can I test this?

[kc8adu]

Re: GA-6VTXDR-C won't post with 2nd CPU

did you clear cmos?
try putting a single proc in socket 2.
if it posts i bet your psu is to blame.
adding a cpu doubles the load on +5

[zedhex]

Re: GA-6VTXDR-C won't post with 2nd CPU

cmos cleared, tried each cpu in turn in each socket. Same result every time. Putting either one of the CPUs in socket 2 causes a no POST. Putting either one of the CPUs in socket 1 alone will POST. The odd thing is that if I put a PIII-S in socket 1 and a celeron it socket 2, it will post, but it doesn't recognize the 2nd CPU (and this is exactly what it is supposed to do - a celly and a PIII-s don't supoort SMP).

[kc8adu]

Re: GA-6VTXDR-C won't post with 2nd CPU

look to the power supply

[zedhex]

Re: GA-6VTXDR-C won't post with 2nd CPU

I kinda doubt that because it also won't post with one single CPU in socket2. I assumed that this wasn't supported - Does anyone know if this board supports running on Socket 2 alone?