Issue with Dell 7810

Hello,

I have been having an issue with my Dell Precision 7810.

Recently, it was giving me the error message of "correctable memory error has been detected in memory slot DIMM2_CPU1". I have 64GB of ram total 8x4 per CPU. I have since replaced the ram, swapped it out and just checked every single ram stick to confirm that there was not a bad module. I think it is something else.

When I put one stick in everything works fine and that is the DIMM2_CPU1 slot so I don't think the slot is defective on the motherboard. What I was thinking is perhaps it is a power supply issue? When I first received the PC two months ago, I noticed that it did take about 20 seconds for the Dell logo to appear. I was not sure if this was normal or not (I could live with this though.) When I upgraded the video card, not too long after I had this ram issue. The video card is a RTX 2080. My power supply is the 685W. Perhaps this is too little power to run everything? Now I just get the amber blinking light on the power button (memory issue by the code) unless I reduce the ram.

I ordered a 825W replacement PSU in hopes that this will fix the issue.

*I just powered up the machine again this time and after giving me a flashing light serval minutes ago it powered up ok with 32GB of ram but its random.

Here are the exact specs:
Dell Precision 7810
CPU: x2 Intel Xeon E5-2690v3
Ram: 64GB DDR4ECC Memory
GPU: RTX 2080
Storage: x2 7200 HD 6TB as raid 0 format, x2 1TB SSD as Raid 0. 1 512GB Nvme drive with pcie adaptor as boot drive running Windows 10 Pro.
x1 PCI express blackmagic 4K SDI card.

I appreciate any help!
 

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  • Hello there,

    From my experience it's could be one of three things: A bent pin in the CPU socket, a cut trace, or the CPU itself. Have you tried swapping the CPUs to see if it's not the CPU flagging the RAM?

    Like
      • Gil L
      • Gil_Litver
      • 1 mth ago
      • Reported - view

      stormson weathers thanks for the reply! I have not done that just yet. I was hoping that the power supply would fix the situation when it comes. How difficult is swapping the cpu? The other issue I was having is the two ssds. It seems like a power struggle to get the two mounted at the same time. I remember initially it took me a long time to finally have both drives mounted and get power. Now I can only get one mounted at a time when both are plugged in. 

      Like
      • Gil L
      • Gil_Litver
      • 1 mth ago
      • Reported - view

      Gil Litver I should note also that the cpus came pre installed to me, I had not experienced this issue a month ago.

      Like
    • Gil Litver  Replacing the CPUs can be pretty straightforward as long as you have thermal paste to put on them when you reattach the heatsinks, but it's reasonable to have some concerns if you never did it before. If you do it once, it becomes second hand afterwards.

      As for your memory error, In dual CPU systems, usually switching the CPUs can help in ruling out the CPU and/or socket as the fault point. 

      Regarding your SSDs, If you already ordered your power supply, I would suggest waiting until it arrives and then try it out so to see if you can eliminate that as a vector. It may be a bad power rail leading to the SSDs. If it still do the same thing with the new power supply  it may be that the wiring harness needs to be replaced.
       

      Like
      • Gil L
      • Gil_Litver
      • 1 mth ago
      • Reported - view

      stormson weathers 

       

      thank you for your help. I did buy the power supply in hopes that it would cure all my issues. I am waiting for it to arrive. I should note the ssds are not in the place of where the 3.5 hard drive bays are. Those are working perfectly fine. The ssds are in the special cage where a 5.25 bay would go. 
       

      do you think the 20 seconds of black at the start is all related? 
       

      When you say swap the cpus do you mean trying one first and then trying the other or literally  swap the Xeon processor 1 with Xeon processor 2 and boot up with both inside. I have never done it. 
       

      I paid 900 dollars for the machine, at this point is it worth replacing more parts you think? 

      Like
    • Gil Litver For the SSDs, are you using any type of Y-Cable to power the two drives? 


      What I mean about swapping CPUs was that you swap the places of the two CPUs you already have. For example since your error was with CPU1 (assuming the CPU is at fault), then when you switch the CPUs then the memory error would show on CPU0 instead indicating its a fault with one of the CPUs.
      As for the cost, I don't know how long you had your machine, but nowadays it can be hand for around $150-$300 U.S. off of Ebay. Depending on your use case it does have some life in it still, but I would wait and see what can be fixed now before investing more money for parts that might not be required.

      Like
  • I am actually, It is one of those cables that has two power connections in one. It seems to be plugged into the power port on the motherboard near the ram on the corner. 

     

    I think I will wait like you said, for the power supply first. At least I can rule that out of the equation if that does not fix the issue. They are shipping it out today.

     

    I am using it for video editing, 4K footage. It was supposed to be my business machine that would hopefully last. Going with this model seemed like a very good deal at the time.

     

    I have only had the machine for two months but I paid the extra money for those CPUs. They still fetch for 200 a piece on ebay I saw. The machine was built in 2016. Now I wonder if I should have went with a Lenovo instead.

     

    I appreciate you taking the time to help me.

    Like
    • Gil Litver Not a problem! You might want to get a different Y power coupler or (based on your video editing needs) a proper 4x2.5 hotswap enclosure such as a Icydock that will allow you to swap 2.5 drives as needed.

      While I currently don't do any video editing (Jbigticket23 may offer better insight in that regard) I can tell you that even the Precision series of machines are great boxes once you got them tuned to your needs.

      The Precision T7600 that I currently run have served me well enough to where I don't feel the need to go above what I have so far. The biggest hardware upgrade I had to pay for is a Radeon RX 5700 XT video card that I just ordered today. 

      Like
      • Gil L
      • Gil_Litver
      • 1 mth ago
      • Reported - view

      stormson weathers 

      I will definitely look into that Icydock. To be fair that clumsy cage installed never worked great from day one when I got it. I originally thought to get the Precision because I had personally used them prior at my former post production company I worked at. They seemed be reliable, enough to handle ridicules 8k footage. Before I was using a Mac Pro and aThinkstation S20 which both Still served me well.Today I looked up the original specs of the machine it shipped from dell with. It could totally be a bad CPU chip. The CPUs were upgraded as my model originally shipped with the E5-2620 v3 processors. I contacted pc server and parts just to get an estimate. Anew computer barebones with the CPU’s (2690) installed would be 700. The crazy thing is the new Precision models from Dell do not offer the same CPU performance (according to benchmarks)for the price without shelling out above5k. 
       

      When I first got the computer the only thing I noticed strange was the rather long boot time for the Dell logo to appear. It was only after I installed the beefy RTX 2080 I started getting these ram issues although not immediately. 
       

      the other thing I did notice was when watching down 4K footage at first the experience would be great. Fast render times, good playback and then it felt like the system was getting hung up. Can’t play back the same clip I just played and extremely slow render times, so inconsistent stability. Nothing had changed except time passing. Almost seemed like the CPU was maxing out. 
       

      good luck with the rx 5700 xt. 

      Like
    • Gil Litver Thanks! And let me know if the power supply worked out, but from what you just said about video playback, it could most likely be a CPU issue. Won't know for certain until you are able to switch the CPUs around.

      Like
  • I will! Could the CPU also cause this long boot time for Dell logo to appear or is this typical for Precision workstations?

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    • Gil L It could, since both CPUs have to talk to each other.

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    • stormson weathers Gil L To add: You can still make use of your machine with only one CPU in if one of the CPUs arey bad.

      Like
  • Thanks, I ordered the necessary parts (thermal paste and long philips screwdriver), just to have at the very least. I am curious enough now to see if there are any bent pins in the socket or CPU chip. 

    Like
    • Gil L It never hurt to have those tools handy in case you want to swap CPUs out yourself. Bent pins in the socket is one thing, there's yet another possibility:  Since the CPUs are pinless, it may have been possible that whoever installed the CPUs might have accidentally touched the bottom of the CPU with thermal paste (I've done this before after I got a similar memory error in the past). So you would also make sure that the contacts on the bottom of the CPU are also clean of any debris.

      Like
  • stormson weathers what would you clean the contacts with? isopropyl alcohol? Thanks for the tip! I really appreciate your help on this. The power supply is coming today. I'm going to test that first so it is the easiest thing to do. If not, I will check the CPUs over the weekend since it will require more patience. 

    Like
    • Gil L Isopropyl alcohol is acceptable, you can even use a toothbrush to clean the contacts.
      https://www.intel.com/content/www/us/en/support/articles/000027004/processors.html

      Like
      • Gil L
      • Gil_Litver
      • 3 wk ago
      • Reported - view

      stormson weathers I tried the new power supply. That did not seem to help, so then I was ready to the perform the cpu swap and see what I can do, but I think I made it worse. I did not see any bent pins but I did see, some thermal paste on the bottom of the cpu. So I tried to clean everything up. I then swamped the cpus put thermal paste on but in doing so may have bent one of the pins in the cpu socket. I put everything back computer powers on but does not post. I tried with one cpu, gets to the dell logo and that’s it so I think I gave up on this particular machine, at this point im looking for the most cost effective option possible. I would consider buying a barebones with the cpu and motherboard installed and swapping parts but then I’m worried I’ll burn more money again. 

      Like
    • Gil L Make sure you've cleaned the paste from the bottom of the CPU and look at the socket carefully, all the pins should be uniform. If they are, try and reinsert the CPU.

      Like
    • stormson weathers Like Gorilla Warfare mentioned, use a soft bristle brush along with  Isopropyl alcohol to clean the contects on the CPU.

      Like
      • Gil L
      • Gil_Litver
      • 3 wk ago
      • Reported - view

      stormson weathers yea I think the pin maybe bent on the socket it self. 

      Like
      • Gil L
      • Gil_Litver
      • 3 wk ago
      • Reported - view

      stormson weathers I also did the foolish mistake of accidentally  dropping my phone into the computer. I was using the light on my phone to see, and it fell on the cpu. The cpu was already in the socket though. 🤦‍♂️

      Like
      • Gil L
      • Gil_Litver
      • 3 wk ago
      • Reported - view

      Gil L I did want to thank you for all your help, This was the only forum that was able to help me and that really says something. unfortunately I feel like I was taken on eBay. I’ve been very lucky having bought so many computers on eBay with out any problems and smooth personal upgrades. Now I’m looking to see what my next options are. 

      Like
  • Use a soft bristle brush.

    Like
  • I have purchased 5 Workstations this year from EBAY , one was a dud , seller replaced with a working unit.

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  • Glad to have helped. Sorry to hear about that though. I rarely have any issues with Ebay, but I personally try and avoid sellers that has less than 1000 feedback and mostly stick with the same seller when it comes to high-price items. My stroke of bad luck always seem to be ordering on Amazon even on cheap items. As for the bent pins. If the machine is still usable, one last suggestion would be to practice on a cheap/expendable motherboard for correcting bent pins.

    Or if time and cost permits get a replacement motherboard, but you will have to weigh your needs for your computer: 

    Is it worth replacing the motherboard?
    Would it be cheaper to by a barebones replacement PC and migrate the components over?
    Are my needs met using only one processor?

    A lot of people fall into these categories (myself included -- and others here) so you're not alone in this situation.

    Like
  • Yea, at the moment I have a few options. This computer was meant to be for business, I do video-post production for a living so performance is everything. I feel bad about wasting so much but moving on, I think I learned my lesson. This is probably the 10th computer I've purchased from ebay and the third workstation (my first Dell), however this was the first from a private seller. 

     

    PC Parts & Server has quoted me $700 for a barebones with the E5-2690v3 processors in them on a 7810 or $750 for the 7910. I have a phone call tomorrow to see what they can do. Personally, i have a fear at this point of wasting more money for a computer that does not work and no long warranty. 

     

    My other option would be to buy a 5820 from Dell brand new. I'm waiting on quote as I priced this out from Lenovo. Dell is more expensive. The core count would be less, probably 8 or 12 core but the big thing for me is that warranty. Buying a computer from the manufacture, i feel a bit more secure after this whole thing. 

    Like
  • Also, I was looking at the new Mac Pro's which start at 6K. The specs seems so similar to the Precisions but at half the price. 

    Like
  • stormson weathers Do you think there is any advantage in buying a Dell over a Lenovo brand new? 

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    • Gil L With new you are getting  warranty and everything is new. Since this is for your job you may want to research further into a machine that will last you. HP workstations are decent and another option is getting a custom built computer as well.

      Like
  • stormson weathers I believe the Dell Warranty is better than Lenovo although while owning several Lenovo products, I’ve never dealt with customer service. Dell is giving me a 5 year service warranty if I go with them. I think I might go with the Xeon 8 core model and two AMD Radeon WX7100GPUs. I can’t stomach to fork over 1k extra for 64gb of ram so I will likely upgrade myself if I can confirm a few things. I’m also getting the thunderbolt 3 adaptor. I was looking at HP but they seemed even more expensive. 

    Like
  • I also saw micro center selling there power spec computer for 1700 dollars which has a Ryzen 3900x , 32gb of ram and the RX 5700 but I don’t know how it is or how the warranty service is from them, 

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  • stormson weathers Decided to go with a 12- core Xeon W-2265, Precision 5820. That 5 year warranty is ultimately what sold me after being burned. I got the dual radeon WX 7100 for a total of 16gb vram. Should be enough power for my needs.

    Like
    • Gil L Congrats and I hope the new machine works out for you! For your work needs, that peace of mind is worth spending extra on.

      As for your 7810, you may want to reprupose that for other tasks, even if it only has one working CPU: A media center, gaming/VR rig (if you're into that), a secondary video/3D renderer, audio processing machine, or even use it as the base for a homelab.

      While it failed at being what you intended it to be, it may still serve some alternate purpose. 
       

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    • Gil L 

      Should be a great machine...Congrats!

      Like
  • Gorilla Warfare thank you! I hope so, not too familiar with the WX 7100 cards but I recently was told that dual GPUs are much better for 4K performance in DaVinci resolve but coming from macs, Apple seems to like AMD’s for gpus and they worked fine for me. I know quadro is preferred but they were over my budget at least getting something decent.Tried to find that balance of good processor and good video card and less on ram which is easily upgradable for cheap(not 1200). I also looked at refurbs but every time I found a video card I liked in a precision I did not like  the processor or the other way around, Poor bench mark performance. 
     

    I do actually have a gaming question though. Can you guys recommend a laptop for gaming in the 1200k range? I think Ryzen May be the way to go but I could be wrong. Asking for a friend. 
     

    On a side note I’m very happy to be part of this forum. You guys have been nothing but helpful in this whole experience. It sucks to get burned but great to get advice and move on.
     

    The 7810 does not work at all anymore on either socket, computer will not post. Working on trying to return the components I upgraded so I can at least retain some of my money back.

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