Problems with turning on my computer

My computer: Asus P5KPL-AM IN/ROEM/SI, bios version:0508
Processor: Intel(R) Core(TM)2 Duo CPU E7600

Recently I changed processors. I had Intel Pentium 4, and few days ago I changed it to Intel(R) Core(TM)2 Duo CPU E7600. Since then I have problems with turning on computer. So, when I turn on my computer, power button won't turn on the light on it imediately. Only after some time. That time processor fan starts to spin very slowly, then stops, and after few seconds starts to spin normally, only at that time power buttons turns on blue light, I don't understand why it doesn't start to spin normally immediately after I press power button? Why power button doesn't immediately turn on the light after I press it, like it was with Pentium 4?

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Reply to: Problems with turning on my computer
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Clarification Request
I see latest BIOS is already used

Did you also upgrade the controller chip driver files yet?

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I see it.
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I don't have the possibility to update my computer right now.
But let me ask you, what can happen to the motherboard if I don't update it? If I ignore this issue, can it be damaged?

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I doubt it will hurt

Considering this page showing this E7500 was OK back with earlier BIOSin 2010, and there are some more advanced processors OK'd when you upgraded the BIOS version, I suspect having this one added to the list just failed to occur.

There may be some other reason it's doing this. Hopefully no pin on socket was bent or failing to touch the grid array on processor. I'd check my Front Side Bus setting in BIOS, along with the CPU multiplier and make sure it adds up near to 3 Ghz. I used a faster "unrecorded" CPU on an older mobo once and all it took was to increase the multiplier for it to work at the proper speed.

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My bet is the BIOS can't quite deal with the CPU

It can't install the usual microcode and that's the cause of the delay. Another fix is to exchange this CPU for one that is supported.

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If I dont change bios, and ignore that delay, will it be Ok for the motherboard? I hope that won't damage it?

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At this point, anyone's guess.

When you have something like this, it's rare to find anyone that will tell you it's OK. The CPU voltages can be different for each CPU so when you stick in one that's not on the list, what will happen? No one may tell you.

If it works better than the stock CPU, enjoy but no one should tell you it's OK. It's unsupported.

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come back in week or two

Let us know how it worked out for you.

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