broken heatsink cause of no display?

May 14, 2011 at 08:51:19
Specs: Windows 7, Core 2 Quad
i recently cleaned my intel stock heatsink fan and accidentally broke one of its latches, i thought it was no big deal so i put the other 3 latches in place, but then when i turned on my pc there was no display and after a while it turned off on its own

is it the heatsink thats the problem here? or my videocard?
any help would be appreciated thanks.

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May 14, 2011 at 08:55:05
If the heat sink is not properly clamped to the CPU it will overheat. If it overheats it stops working. Simple really.

You need a new motherboard or find a way to fix the broken clamp..


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May 14, 2011 at 09:39:02
As StuartS stated, the heatsink must be fully locked in place or the CPU will overheat & shutdown. That means you MUST secure all 4 "latches", plus you MUST use thermal paste between the CPU & heatsink. Not only that, but the paste MUST be applied correctly.

The Core 2 Quad requires a "horizontal line" application.

What exactly did you break, part of the board or just one of the pins? You may be able to get a replacement pin, but may have to get an entirely new heatsink/fan.

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May 14, 2011 at 09:48:06
You probably have some other problem.

Did you remove the cpu then re-install it ?
I'm assuming you didn't. That's completely un-necessary, unless you needed to change the cpu.

The cpu WILL overheat if the cpu heat sink is not installed so that it's sitting flat on top of the cpu, but it takes time for that to happen - e.g. if it has cooled to room temp before you start the computer, the cpu will work fine until it gets too hot.

Modern mboards will automatically shut off the mboard when the cpu temp goes above a certain maximum.

If a 3 or 4 wire fan is not connected to the 3 or 4 pin cpu fan header, modern mboards will shut off the mboard in as little as a few seconds when no rpm is detected from the header.

Check to see whether there is something that you unplugged and forgot to plug back in, or a connection of something that you un-intentionally have loosened.

E.g. most mboards have TWO power connector sockets - the main 20 or 24 "pin" one, and a smaller 4 or 8 "pin" one, that must be connected to the power supply.
Some video cards installed in a slot have one or two power sockets that must be connected to the power supply with wiring connectors that fill the socket .

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May 14, 2011 at 17:35:06
thanks for the answer.

thats what i think happened, the heatsink is not properly mounted in the processor because of the broken clip of the heatsink. i just need to buy a new one.

but is it the reason why there is no display in the first place? i thought even though the heatsink is not properly in place the pc would boot up to post and after a while just turn off on its own,
mine just didn't had a display the first time i turned it on.

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May 18, 2011 at 07:03:53
"but is it the reason why there is no display in the first place?"


See response 3.

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