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Bent pins on motherboard - what went wrong and is the CPU ok?

post #1 of 18
Thread Starter 
I don't know where to post this because it affects multiple parts, but I thought I'd start here.

This is my 2nd build and something went horribly wrong with installing the CPU. It's a Skylake 6700k, the motherboard is the Gigabyte Z170x Gaming 7, and the cooler is the Noctua NH-D15. I completed the build yesterday and when I booted up I was getting a memory initialization error. 2 of the 4 memory slots weren't working on the motherboard. I was advised it was likely bent pins. I took it apart and indeed there were a couple bent pins. I can't imagine I have the skill to repair it. Of course I fully expect Newegg will deny my refund request so I'm already out $200 for the motherboard. I have a new Gaming 7 motherboard ordered and on the way.

Now I'm worried about the CPU. There are 2 nicks on the top of the CPU, 1 on the left edge and 1 on the right edge, around half-way down. I'm guessing it was from the mounting. The top of the CPU appears okay - it's just the nicks on the 2 edges. So now I'm worried that between the nicks and starting the PC with the bent motherboard pins, the CPU could be damaged now too.

First, is it possible to bring the CPU to a local PC shop and have them check the CPU to see if it's okay? And 2nd, what went wrong? I just dropped the CPU in paying attention to the arrow, and closed the lever down. It did take a frightening amount of force to close the lever down and latch it. I was terrified it was crushing things it took so much force. The Noctua cooler is a monster but they claim the securefit2 mounting system makes it impossible to overtighten. I hand-tightened only for the backplate and I tightened the 2 front screws only until they stopped, just like the manual said. So what went wrong? What caused the nicks in the CPU edges? The motherboard mount or the cooler? I did remove the cooler and re-mount it during the build because I felt the first time I put on too much paste (I did - I used the cross method but it was too much so I decided to use the dot method and re-do it). Could the multiple re-mounting of the cooler have put more strain on things?

Now I'm terrified to try again and I'm thinking of just paying a local shop to assemble it, if they even offer that service - I'm not sure if they do. What did I do wrong?
post #2 of 18
Quote:
Originally Posted by miles17 View Post

I don't know where to post this because it affects multiple parts, but I thought I'd start here.

This is my 2nd build and something went horribly wrong with installing the CPU. It's a Skylake 6700k, the motherboard is the Gigabyte Z170x Gaming 7, and the cooler is the Noctua NH-D15. I completed the build yesterday and when I booted up I was getting a memory initialization error. 2 of the 4 memory slots weren't working on the motherboard. I was advised it was likely bent pins. I took it apart and indeed there were a couple bent pins. I can't imagine I have the skill to repair it. Of course I fully expect Newegg will deny my refund request so I'm already out $200 for the motherboard. I have a new Gaming 7 motherboard ordered and on the way.

Now I'm worried about the CPU. There are 2 nicks on the top of the CPU, 1 on the left edge and 1 on the right edge, around half-way down. I'm guessing it was from the mounting. The top of the CPU appears okay - it's just the nicks on the 2 edges. So now I'm worried that between the nicks and starting the PC with the bent motherboard pins, the CPU could be damaged now too.

First, is it possible to bring the CPU to a local PC shop and have them check the CPU to see if it's okay? And 2nd, what went wrong? I just dropped the CPU in paying attention to the arrow, and closed the lever down. It did take a frightening amount of force to close the lever down and latch it. I was terrified it was crushing things it took so much force. The Noctua cooler is a monster but they claim the securefit2 mounting system makes it impossible to overtighten. I hand-tightened only for the backplate and I tightened the 2 front screws only until they stopped, just like the manual said. So what went wrong? What caused the nicks in the CPU edges? The motherboard mount or the cooler? I did remove the cooler and re-mount it during the build because I felt the first time I put on too much paste (I did - I used the cross method but it was too much so I decided to use the dot method and re-do it). Could the multiple re-mounting of the cooler have put more strain on things?

Now I'm terrified to try again and I'm thinking of just paying a local shop to assemble it, if they even offer that service - I'm not sure if they do. What did I do wrong?


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post #3 of 18
Thread Starter 
Quote:
Originally Posted by Shiftstealth View Post

Pictures to assess?

I wish I could post a picture but my tablet is the only device that can take a picture right now and it's impossible to get an image in focus from that thing. I've tried and tried and it's impossible to see anything in the photos it takes.

The best I can describe it is if you imagine taking a knife and trying to carve 2 tiny nicks in the CPU edges, or taking needle-nosed pliers and trying to crimp the edges. There's a tiny bit of metal sticking up at both nicks, just a hair.
Edited by miles17 - 6/16/16 at 4:05am
post #4 of 18
As long as the nicks arent too deep and dont make contact with any of the pins it shouldnt be an issue, keyword, shouldnt.

As far as bent pins, ive never had it but with a thick strong needle should be very easy to straighten em out as long as they're not too crazy bent which they shouldnt be. The amount of force to clamp it down when new is normal, mine made crackling sound when i first installed it and was worried as well but wasn't a problem. After that its never made the sound again.

Bent pins is usually not from user install but more then likely from the factory. Its a possibility that it already came bent. Id try to straighten em out then give it a shot again. The cpu more then likely is fine, someone posted on a delid thread with huge scratches on their wafer and it still worked fine.
    
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post #5 of 18
Thread Starter 
I've already got the motherboard on the way back because I couldn't imagine trying to repair it. From everything I've read, Newegg is guaranteed to deny the refund due to the bent pins. Newegg automatically denies refunds if there are bent pins because they automatically blame it on user error.

Of course now I'm scared to try again with the new board because I don't know what I did wrong in the the first place. I'm thinking it's my fault because not only were there bent pins, there are also those nicks in the CPU. So there must have been something going wrong with the install. But I don't know what I did wrong so how can I avoid it if I try it again?

Is the cooler putting too much force on the CPU and that caused the nicks and the bent pins? Everyone says that cooler is safe for the Skylakes and it's impossible to overtighten due to their securefit2 mounting. Of course most people in the forums says it's very hard to bend pins during an install and somehow I managed it.
post #6 of 18
Quote:
Originally Posted by miles17 View Post

I've already got the motherboard on the way back because I couldn't imagine trying to repair it. From everything I've read, Newegg is guaranteed to deny the refund due to the bent pins. Newegg automatically denies refunds if there are bent pins because they automatically blame it on user error.

Of course now I'm scared to try again with the new board because I don't know what I did wrong in the the first place. I'm thinking it's my fault because not only were there bent pins, there are also those nicks in the CPU. So there must have been something going wrong with the install. But I don't know what I did wrong so how can I avoid it if I try it again?

Is the cooler putting too much force on the CPU and that caused the nicks and the bent pins? Everyone says that cooler is safe for the Skylakes and it's impossible to overtighten due to their securefit2 mounting. Of course most people in the forums says it's very hard to bend pins during an install and somehow I managed it.

I used a Noctua NH-U14S and took it off and reinstalled it a bunch of times and didn't bend any pins. Personally i think that just putting in a cpu and clamping it down is impossible to bend pins i think they come that way. Ive taken my cpu out at least a dozen times in a matter of a month testing bare die, different TIMs, IHS with different TIMs, waterblock, air cooler and have never bent a single pin.

I would imagine its virtually impossible to bent pins just by sitting a cpu in its socket considering it only goes in one way and sits pretty snug. Either they were already slightly bent and then putting the cpu in bent in some more. Or they were already bent and the cpu didn't work.

Ive never had to bent pins back but id imagine them to be pretty solid in the first place and just installing a cpu and cooler couldnt bend them.
    
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post #7 of 18
ASUS is the one that automatically considers bent pins to be due to user error but the fact is that sometimes they do come from the factory with bent pins. I thought I had bent a pin on the ASUS MOBO in my present rig. When I tried to straighten it out, it took no effort at all. The pin literally flopped back up into place when I just touched it with a tiny jewelers' screwdriver; the pin was loose in its solder ball. That's a factory error. Fortunately, it stayed put long enough for me to reinstall the CPU and the MOBO has been working fine for the past few years.
     
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post #8 of 18
Thread Starter 
Yeah I hear it's very hard to bend pins during an install which makes me feel pretty terrible thinking that somehow I managed to do it. I'm also not at all happy with Newegg for automatically denying refunds for bent pins. There's no way to prove either way if it was me or if it shipped that way. so they could just automatically bend a pin on every motherboard that they get back and deny it based on bent pins. There seems to be a lot of discussion out there on this issue with Newegg. Tons of people get their old motherboard shipped back with an email denying the refund due to bent pins.

I'm really worried that the CPU could be damaged, either shorted due to the bent pins, or due to the crimps at the edges. I wish I knew what caused the crimps on the CPU. Is there a way that it can be tested at a local shop? And is the cooler okay after removing it several times now? The bottom has had the paste cleaned off several times now and I wonder if the surface is marred. There appears to be a few hairline scratches on the contact surface. I used 91% alcohol and non-ridged coffee filters (and q-tips) to clean the paste off.

It just seems like quite a coincidence that I had bent pins and also somehow there are nicks on the edges of the CPU. The nicks on the CPU tell me that too much force may have been applied, either by the cooler or by the motherboard mount.
Edited by miles17 - 6/16/16 at 4:58am
post #9 of 18
Quote:
Originally Posted by Lady Fitzgerald View Post

ASUS is the one that automatically considers bent pins to be due to user error but the fact is that sometimes they do come from the factory with bent pins. I thought I had bent a pin on the ASUS MOBO in my present rig. When I tried to straighten it out, it took no effort at all. The pin literally flopped back up into place when I just touched it with a tiny jewelers' screwdriver; the pin was loose in its solder ball. That's a factory error. Fortunately, it stayed put long enough for me to reinstall the CPU and the MOBO has been working fine for the past few years.

+rep for truth. Seems a few people have issues with Asus and bent pins on there mobos its crazy. Unless theyre completely mangled or theres like a dozen bent pins should be an easy fix. Theres even tutorials on removing em, straightening em back up and reinstalling into the solder haha.
    
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post #10 of 18
Thread Starter 
Bottom line, if I screwed up, I wish I knew where or how so I know not to do it again. I thought I did everything right but ended up with bent pins and dents in the CPU so something must have gone wrong on my end. It seems hard to believe that just dropping the chip into the socket and puling the latch down could damage the chip, but it took a lot of force to pull that lever down, and if I remember I stopped part way and lifted it back up because there was so much resistance I thought I was doing something wrong, and then pulled it down again and forced the lever under the latch. It took a surprising amount of force.

Could it be I bent the pins as I was tightening the cooler? With this cooler, it's very easy to mount - there are only 2 screws to tighten on the front. Top and bottom. So I tightened one a bit, then the other, then back and forth until they both stopped. I tried to do it evenly but maybe I went too much on one screw and it put uneven pressure on the CPU/pins? It really shouldn't be that easy to bend the pins just by mounting the cooler as the directions indicate.

Is the Noctua NH-D15 too much for the Skylake? I have a hot 3rd floor apartment in the summer so I wanted the best air cooler. From another forum I read this about the Noctua:

"Note that Noctua, Cryorig, Prolimatech and others use tensioning screws with a definite stop, so that further screwing-down is impossible. Then the heatsink itself is held down by the springs."

So it sounds like it wouldn't be possible for me to have bent the pins or nicked the CPU with the cooler since it's not possible to overtighten. Which means I must have done it when I was pulling the lever down to latch the CPU in the socket.
Edited by miles17 - 6/16/16 at 5:52am
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