hey viperfx
Im really unsure if the heatsink is in or not, because I pushed it pretty hard against the mobo and it still wouldn't click (There are two pins that seem to click into place and two that dont)
It seems almost certain that the stock Intel® LGA775 heatsink is
not fitted correctly . . . it is an appalling design and requires an obscene amount of pressure to get attached correctly . . . in the past I've had to apply so much downwards force in an attempt to get the pins to "click" that the motherboard resembles a boomerang . . . the force is so great that once the pins are "clicked" the board remains flexed!
Having said that I have never broken or damaged a single board but the process is certainly unnerving!
To make matters more complicated it is also possible that if someone has made a real bodge-job of installing the stock Intel® LGA775 heatsink one or more of the clips could have bent outwards and prevent the push-pins from ever engaging correctly . . .
So with this all in mind and assuming you are feeling brave and would like to make some progress today I think we have no choice but to carefully remove the heatsink and inspect the pins! . . . you would need to power down the PC, remove all the cables . . . place the tower on a solid worktop, disengage the 4-pin fan connector . . . then looking closely at the four black push-pins turn each pin carefully anti-clockwise and "pull" the black peg upwards . . . once this is done for all four the heatsink can be lifted straight-up
The arrows on the push-pins show the direction to turn to unlock
When you "unlock" the push-pins if the heatsink is fitted correctly it will suddenly "pop" upwards due to the pressure being released . . . if the heatsink doesn't "pop" upwards when you turn all the pegs you can be sure it wasn't fitted correctly . . .
When you lift the heatsink off the processor try not to touch/disturb the TIM (grey poo!) on the bottom . . . and I want you to carefully examine the four pegs for damage . . . the clear outer casing should not be bent or wodged at an angle and instead be pointing straight down . . . if it is bent then squeeze it back into position with your fingers . . .
In theory the push-pin design is similar to a raw-plug and screw that you use to attach something to a wall . . . the clear outer casing is like the raw plug that fills the cavity and the black pin that gets pushed down are like the screw which fills the raw-plug and forces it outwards . . .
Here is a picture of the upturned heatsink with the black pins pulled out with just the clear outer plug showing . . . this is what yours should look like when removed . .
If the pushpins are not damaged that’s good news . . . give the heatsink a good blow out . . . again try to preserve the grey-poo on the bottom as for the moment we need to re-use it . . .
With the heatsink in your hand . . twist all the black pegs clockwise and make sure they are all pulled out/upwards so that the black inner peg is not engaged in the clear outer casing . . . . then carefully plop the heatsink backdown making sure all the clear outer pegs are aimed into the four holes around the LGA775 socket . . . once the heatsink is sitting back on the processor with all the clear outer pegs sitting in the four holes give the heatsink a tiny wiggle and then holding it firmly from above push one of the black pegs downwards until you hear a "click" . . . then move to another black peg diagonally opposite and do the same . . . good firm push downwards . . . then move back across to the 3rd black peg and do the same before finally attempting to get the fourth and last black peg pushed downwards!
If the pegs are not damaged (as we checked above) then each and every black peg should "click" into position as you shove them downwards . . . you really need to use a lot of force to do this!
If this doesn't fix the overheating problem then we have no choice but to order you a 3rd party heatsink that doesn't use the Intel® LGA775 push-pin system . . . that will take several days to arrive though so hopefully if your stock heatsink is not bust and assuming you can get the stock heatsink fitted correctly there is no reason we cannot get this little project sorted today!
