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CPU Upgrade Problem

By Sean.Colledge ·
I was recently asked to swap the CPU of one of my company's servers with a new desktop machine that they bought. It is a Intel Core 2 DUO 2.8GHz processor, that will be replacing a Celeron 2.7GHz and by looking at the specs of the motherboard on the server machine (GA-945GZM-S2) it is capable of supporting this processor. I also used the new heatsink that came with the Core 2 DUO processor when swapping them.

Now for some reason the pc does not even boot up, the monitor light also does not go green once the pc is switched on. And once I left the machine on for 2minutes, it switched itself off. That tells me it might be a heat problem and that the machine cut itself off as a precaution.

I did not put any new thermal paste on before I attached the heatsink though. Could that be the problem, because currently it is using the paste that was already there.

The problem definitely does not lie with the CPU, because I put it back into its original machine and it still worked fine.

Let me also just add, that there is no activity whatsoever when I switch it on, that means no keyboard functionality, no harddrive activity and I cannot even access the BIOS.

If anybody can help me out with this, possibly give me a few ideas that I can try out, it would be much appreciated.

Thanks
Sean

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CPU

by Matt.Altman In reply to CPU Upgrade Problem

If I had to guess I would not think it would be a heat problem. For it to happen that quickly after it had been idle for a while makes me think the heat is ok. The thermal paste that comes on the heat sink should be sufficient as well. My best guess would be the CPU and the Mobo are not recognizing each other. Especially since the new CPU has two cores and the old one did not. You may want to try contatcing the manufacturer of the motherboard and asking them about the CPU. I have seen incorrect information on their websites before.

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CPU

by Matt.Altman In reply to CPU Upgrade Problem

If I had to guess I would not think it would be a heat problem. For it to happen that quickly after it had been idle for a while makes me think the heat is ok. The thermal paste that comes on the heat sink should be sufficient as well. My best guess would be the CPU and the Mobo are not recognizing each other. Especially since the new CPU has two cores and the old one did not. You may want to try contatcing the manufacturer of the motherboard and asking them about the CPU. I have seen incorrect information on their websites before.

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FSB

by Sean.Colledge In reply to CPU Upgrade Problem

It turns out that the motherboard in question only supports a FSB of 533/800 and maximum 1066 through overclocking. Now this new CPU that I want to put into it has a 1333MHz FSB. Could anybody confirm that this IS the problem? Because I know that with RAM you can put a faster speed RAM into a slower slot and it will just run at the slower speed...

Thanks in advance!
Sean

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