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cpu and fan

Hi. I have a big problem...
I have P5LD2-VM , with an old Celeron single core 2.8ghz .
I just bought a new CPU . Core 2 duo e6600 and an alpine 11 rev 2 cooler. I installed the new cpu and the cooler but the pc won't boot . There is no display on screen . I tried removing and repluging everything but same result... I reinstalled old cpu with the new cooler and it boots ok ... I updated the bios to the lasted version ... And I'm sure the motherboard supports the CPU.
So what could it be? Did I installed the cooler wrong ? Is it maybe not tight enough ? May the mb died?
P.S : With the old CPU the pc shuts down after 5 seconds but boots normaly.

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Clarification Request
Solved !

In reply to: cpu and fan

Well.. the motherboard has a second rev that supports core 2 duo and I own ofc the first one. That explains the refusing to boot .
The 5-second shut down was because the heat sink was not properly touching the CPU cause of 2 corners of the metallic thing that holds the CPU still. I did 2 channels on it and now fits ok and the problem is gone.
Thanks for the help.

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Good to read.

In reply to: Solved !

In a word. Details, minutia, etc.

All Answers

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installed 180 degrees out?

In reply to: cpu and fan

this was completely new, or "new to you"?

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In reply to: installed 180 degrees out?

What you mean exactly ?

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In reply to: ?

The cooler is new but the cpu was used . It's been tested and I bought it from an PC component shop .

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last sentence indicates PSU problem

In reply to: cpu and fan

The lower power Celeron is able to boot and hold for a bit , the newer more powerful CPU isn't, and likely cause is due to low power, which could be "bad caps" or PSU problem.

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it cant be..

In reply to: last sentence indicates PSU problem

My psu is 10 days old because I just got it cause my old one died.. It's an green power 450w atx .

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Can't find that PSU

In reply to: it cant be..

I wanted to check some basics but can't. calls out SOME e6600 CPU but I see revision models and such so you would have to really dive into the minutia here.

There's also a note about the BIOS revision. One of the old problems that I ran into is that I need a supported CPU to install the BIOS to support the next level up CPU.

Check your BIOS versions.

OK, and then how do you know the CPU is good? Tested it in another PC?
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the cpu is ok

In reply to: Can't find that PSU

I'm sure its working I got it from a component shop. About the PSU: It's no named it says ' Switching Power Supply ' ... I said green power because it appears on the warranty ticket on the side of it. ( sorry for my broken English xD )

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So the CPU is OK.

In reply to: the cpu is ok

Notice the CPU revision detail in the motherboard support link? I can't check that out for you. You have to read all the little markings on the CPU.

One e6600 is not another e6600. There are steps and revisions to the CPU line.

And yes you claim you have the lastest BIOS but never shared it's version.

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I do

In reply to: So the CPU is OK.

I have something like 1300 can't remember exactly but its the latest I found on motherboards support and driver list.

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In reply to: it cant be..

The PC worked perfectly till I installed the new CPU/cooler. So why it's shutting down ? Sad

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Could be the revision of the CPU or BIOS

In reply to: PS

Or other. For example these older boards were not being tapped too hard. There's a power supply section on the motherboard to supply the CPU it's own voltages. The old CPU wasn't tapping that too hard and you pop in a new CPU with more power draw and you could find yourself in this situation.

However the issues of CPU and BIOS revision are still unknown.

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i found something

In reply to: Could be the revision of the CPU or BIOS

I just read that a pc will not boot if the CPU is not detected by the bios . That makes me think that I failed updating bios cause I used an in windows program to update it..
Tomorrow I will reinstall the old CPU and find a floppy or Usb stick to update it with afudos like the tutorial on the Asus site. And the PC was shutting down cause I did sit it wrong thinking I was doing wrong first time but I'm an genius xD .
Thanks for almost live help till now , I'll try what i said and come back with a reply .

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I thought you might return to that

In reply to: i found something

" And the PC was shutting down cause I did sit it wrong thinking I was doing wrong first time but I'm an genius xD . "

That's why they have those little guide marks on some of them.

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