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CPU locking made crunching noise, computer won't boot

Last response: in CPUs
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August 11, 2013 2:48:42 PM

Fastening my Intel i5 4430 into an ASRock Z87 Pro3 motherboard socket frame made a horrible crunching sound.
The lever was incredibly tight and resistive with the lever already halfway down, but I checked multiple times that there was absolutely no other way of getting the clip shut, so I just pressed harder.
I got scared and opened the frame after the noise, and small dents or abration marks were visible on the flanges of the backplate, but nothing else seemed wrong. Tightening the clip again made no sound, so I presumed everything to be alright.
Is this normal?

Now though, I can't get any signal to the monitor when starting up. Either from my old video card or the onboard DVI output. Waiting several minutes without hearing any sounds, it seems the computer doesn't even boot. I have a USB drive in the front panel from which I'm trying to boot/install Windows 8.

What should I do?

The components are:
PSU: Corsair CX430 V2
MB: ASRock Z87 Pro3
CPU: Intel i5 4430
GPU: ASUS 8800 GT
SDD: Kingston SSDNow V300 60GB [in SATA_0, brand new]
HDD: WD Green WD10EARS [in SATA_1, from old computer]
RAM: G.Skill RipjawsX DDR3 1600 Mhz 8 GB (1 x 8GB)
August 12, 2013 3:56:37 AM

It's possible that the pc is not booting because the heat sink fan is not installed properly. On Intel boards you must make sure the four feet or prongs exit through the corresponding holes on the main-board. Quite often, especially in refitting an old heat sink fan the feet of the fan are prone to splaying before going through the hole. This can be one or more of the feet causing the problem. When pushing on the lever the heat sink fan is lopsided and not having even contact across the surface of the CPU. This is detected by the main board which turns off the power to the CPU. Thus I don't think the crunching sound was fatal, but check that all four feet are seated correctly through the holes.

Good Luck
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August 15, 2013 9:38:55 AM

werner123 said:
Hi, unfortunately the motherboard or CPU might have been damaged during the HSF installation procedure. Some force is required when installing the HSF, but when to much force are needed to install you must be doing something wrong. Check for Physical damage on the CPU


harna said:
It's possible that the pc is not booting because the heat sink fan is not installed properly. On Intel boards you must make sure the four feet or prongs exit through the corresponding holes on the main-board. Quite often, especially in refitting an old heat sink fan the feet of the fan are prone to splaying before going through the hole. This can be one or more of the feet causing the problem. When pushing on the lever the heat sink fan is lopsided and not having even contact across the surface of the CPU. This is detected by the main board which turns off the power to the CPU. Thus I don't think the crunching sound was fatal, but check that all four feet are seated correctly through the holes.

Good Luck


Well, I had a friend, who was until recently a professional, to look at it. He did the age-old fix of take-it-apart-and-put-it-back-together, and the computer boots! Neither of us really knew what he fixed and how, sorry to say.

By his judgment, the damage on the CPU backplate was only superficial. The LGA-1150 sockets are new to him, and he said that the fastening lever was curiously tight. Probably a small manufacturing defect, but people buying the ASRock Z87 – particularly Pro3 – motherboards should be prepared.
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