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Dual Processor not Dualling

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by yatesee

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Hi,
I've got a Dual P3-1ghz pc that we use for rendering animation frames. Its got WinNT4 installed, and 1gb ram.

When booting up with both processors i dont get a gfx display, there is no POST beeps, and i think it doesnt do anything.

When booting up with a single processor i can see all..e.g. bios info, and then it goes into windows.

i've tried changing the processors, different slots, re-jiggin memory. I even thought it was the mains power supply, so swapped it to the other side of the office. Still no joy :-(
I dont think its the PSU either, as i've swapped that out with another one.

Any ideas gang?

10 replies

by yatesee

Ok, when i built the pc up, i used the multi-processor option. WinNT4 know about both processors, so i'm damn sure it isnt that.

by franjent79

Did you check if Dual Processors is enable in your Bios. To get into your Bios just press Del at the begin of the rebooting point. That's the defualt way. If you have somthing else, leave me a comment and i'll try to help you, but i'm sure that it's the Bios and you just have to enable it. Good luck.
Francois

by outamyhead

I was just wondering the same thing as the last post,are both the chips showing up in the BIOS POST screen?

If not then like the last post check the BIOS to see if the Dual processor is enabled, if it is then try both the chips running on their own, then that would eliminate a bad CPU (which is another thing that could be causing the problem).

by yatesee

I just get a blank screen. cant see the POST screen.
i've tried differnet cpus in place of cpu2 and still no joy..
im about 3posts away from throwing out the window.

by outamyhead

has it been tested with a single processor in both the CPU sockets?

I have not used a dual processor board so I have not got any experience of them but can it run with either socket occupied or does it have to see the first socket occupied, if itdoesn't matter then I am wondering if one of the sockets is damaged?

by yatesee

a dual board runs like this.... it must have a cpu in socket1, and cpu2 goes in socket2, cant put a single cpu in socket2.
what i did try today was putting a different cpu in socket 2. the cpu i put made the it get past the POST, but then it hung before it said "hit a key to boot from CD" or starting windoze.

Im also gonna try using a different m/baord 2moro, but i think it will come up the same.. i sem t be having a lot of bad luck with dual processor pc's.
but any more suggestions gratefully received!

cheers outamyhead!

by jfrench

Are the processors the same exact ones? I know when i went to upgrade a server we had here, I had to order two processors that were the exact same. If I remember right, if the stepping on the processors don't match. Intel says that the P3 can have mixed steppings, but I'm sure there are exceptions to this.

Steppings are incrimented on processors whenever there is a new revision made. You can have the same speed processors with different steppings.

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