Member Avatar for Luckyjfl

Hi Guys,
I have a 775 Motherboard and Intel 3.00 Duel processor. As many of you are aware, the processor heatsink has four legs which you have to press into the four holes in the motheboard. I have tried this with two heatsinks and the blooming legs just keep popping out again. At the moment, I have the pc lying on its side, [ heatsink still loose ] . If I stand it up, the heatsink will just fall away from the processor. Is there anyway, I can attach the heatsink to the motherboard without using the press in legs to do so. I have just about reached the end of my tether with this one. I think in all my years [ 65 ] buying a 775 motherboard was the worst decision I ever made,lol. Ah well, we do learn the hard way. I digress, sorry. Any idias Guys.

Cheers

Lucky

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  • Latest Post Latest Post by crunchie

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Good to see this ended well for and thanks to and for the troubleshooting ideas. Socket‑775 push‑pin coolers are simple but can be maddening when the plastic retention or the pins themselves stop working. Below are practical checks and safe fixes that add to what’s already been tried.

Start by inspecting the mounting area with the board out of the case. Look for cracked or elongated holes in the plastic retention frame and for broken prongs on the pins. If the pins look intact, test one outside the board (into a similar hole or a spare piece of plastic) to confirm the prongs expand and latch. If a prong is broken or the latch on the underside is damaged, the pin will never hold reliably.

If repair is needed, follow these steps:

  1. Power down, remove cooler and clean old thermal paste with isopropyl alcohol before working.
  2. Remove any broken pin pieces carefully with needle‑nose pliers from the top or bottom; small fragments can short or prevent correct seating.
  3. If the pushpin assembly itself is faulty, salvage pins from a donor cooler or buy replacement pins made for Socket 775 and fit fresh ones.
  4. For a safe temporary hold while sourcing parts, use non‑conductive straps (rubber bands or cable ties) routed so they apply gentle, even downward force — do not use adhesives or metal wires that can short components.

Final checks: when the cooler is reinstalled, use a moderate, even pressure so the contact is uniform and reapply good‑quality thermal paste. Boot and watch CPU idle/load temps to confirm contact (a jump of 10+C indicates poor mounting). If the board’s plastic mounts are shredded, a long‑term solution is to switch to a cooler with screw‑type retention or replace the retention module; if unsure, have a local shop handle the physical repair to avoid motherboard damage.

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Member Avatar for crunchie

Hi and welcome to the Daniweb forums :).

==========

Can you use something like this?
Are you using the stock heatsink?

Member Avatar for Luckyjfl

Thank you Crunchie. I think your idea is brill. In the meantime I have bent the plastic pluige under the MB so that they are more tighter. But this may only be a tempery measure, until I get that Socket 775 Adapter /Bracket /Clip /Mount.
Cheers again.

Lucky

Member Avatar for crunchie

No worries :)

Member Avatar for djsteich

I wrestled with the heat sink/fan on my Intel D915GAG Socket 775 Motherboard. I found I had to press quite hard to get the prongs through the MB and then press the center pin to seat the prongs. It took a lot more force than I expected but they finally "clicked" into place.

Member Avatar for Luckyjfl

Hi Guys, my appolegies for not getting back sooner. I gave up with the other heatsink and bought a new one on ebay. Surprisingly, it was quite cheap. this one had a back plate and four screws on the heatsink. It went on very easily indeed. So far so good, no probs.

Thanks again for your most helpfull advice.

Luckyjfl

Member Avatar for crunchie

Glad you got it sorted :).

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