Best practice fitting CPU to socket LGA 1151 mobo

As I've discovered it is easy to knacker the pins on the mobo. I managed it recently and its cost £120 for a new mobo (bit of a better one than the original which I could have got for £85).

Problem was caused I think by a few factors:-

1. I didn't update the BIOS first so new I7-7700K was not recognised. Meant I had to swap out new one, put original back in, update BIOS, replace new one again - at some point I damaged the pins.

2. I didn't pay attention to how the heatsink (Corsair liquid cooler) attached to mobo. Very fiddly but I was trying to screw it back on without realising the plate had fallen off the back of the mobo. Possibly causes some bending of the mobo/socket/clamp?

3. Didn't feel right the one time pulling the latch down to lock the cpu. Every time after that it got worse and appeared to damage more pins.

Thanks God for cpus without pins on them! Otherwise, it'd be a broken £300 CPU.

So refitting, I'm planning the following:-

1. Make sure CPU is correct way in slot. (Any way to drop it in gently?)
2. Connect CPU and heatsink BEFORE installing new mobo in case. Bit more room.
3. Be gentle screwing the heatsink back onto the mobo.

Any other suggestions?
Reply to paulfoel
6 answers Last reply
More about practice fitting cpu socket lga 1151 mobo
  1. On first picture of cpu you hold it like that and you can put it into socket as socket has these dents as showed in red circle where you can lie down you cpu carefully.(and you hold cpu while matching notches)

    Reply to Robert Ban
  2. I've never had that ptoblem and have a lot of builds.
    Just set it down matching the side notches and latch it down.
    Reply to Zerk2012
  3. Bought a new ASUS motherboard. MUCH better. Came with a CPU holder which is basically a plastic surround. You clip the cpu into this first, then lay this onto the mobo. Much better.

    All done no problems. Still dont know how on earth the pins bent on the MSI one.

    BTW - I work in IT so although not a hardware pro specifically, I know what I'm doing and have done 100s of hardware component swaps on Sun/Oracle/Dell equipment.
    Reply to paulfoel
  4. yes idk about the other boards but asus got that "training wheels" cpu holder which make it easier to slip it in. also the x99 boards. i feel safer with it. and some people prefer to remove the black plastic cover on the mount first. some others prefer having it popped out as soon as you latch the mount. just as long as you follow the triangle and match it with your cpu and once its cradled in make sure it isnt loose around the little notches on the sides.
    Reply to marksavio
  5. Let me add one more caution I can add from personal experience. I was replacing the cpu in the same MB while upgrading my heatsink. I meticulously removed the old thermal compound with Arctic Clean and applied the new in the recommended pattern. I did not want to get any oily fingerprints on the surface of the chip, which would interfere with the thermal compound when it spread. (Tightening the heatsink spreads the compound in the appropriate pattern.) So I wore nitrile gloves. As mentioned, you need to lay the cpu gently on the pins. My cpu slipped from my fingers as I was trying to do that. The force of the fall, as short as it was, was enough to bend pins. I was never able to straighten them out and had to replace the MB.
    Reply to bigcarbonfprint
  6. I can imagine. I'd be interested to see if anyone has the patience/eyesight to be able to unbend the mobo pins on this sort of mobo.

    Again, going back to the new asus mobo - it even had a slot cover which you left on until the last possible moment.

    Lesson learnt on how easy it is to knacker a mobo.
    Reply to paulfoel
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