cancel
Showing results for 
Search instead for 
Did you mean: 
Graceful_Monkey
Level 1
7 6 0 0
Message 1 of 9
465
Flag Post

HP z840 - 5 Beep Memory Configuration Issue with 2400Mhz RAM

HP Recommended
HP Z840
Microsoft Windows 10 (64-bit)

Hello, 

 

We have the exact same issue as described here:

https://h30434.www3.hp.com/t5/Business-PCs-Workstations-and-Point-of-Sale-Systems/Z840-5-beeps-with-...

 

This topic was never resolved so I am hoping someone can help. 

Bascially the machine will boot up with 2 x 8Gb 2400 DIMM's (Approved Ram) but as soon as we load 4 or more sticks in, it fails to boot and gives 5 Red Beeps.

  • It is using Dual E5-2690-V4.
  • It has the latest BIOS
  • All sticks are matching capacity, size, speed, part number etc. 
  • The CPU's, and Motherboard pass diagnostic tests. 
  • I have observed the loading configuration / order etc. 

It was prevously working fine with Dual E5-2643-V3 and 32Gb of 2133 Ram (8 sticks of 4Gb) and we are trying to upgrade it. 

Any idea what this could be? 

 

Thanks, 

8 REPLIES 8
DGroves
Level 11
4,714 4,684 445 995
Message 2 of 9
Flag Post
HP Recommended

memory errors on  a z840 are almost always due to

 

improper dimm placement (wrong socket order)

 

incorrect ram modules such as non ECC when ECC is specified or using low powered "L" suffix ram

 

mismatched ram  such as mixing 2rank and 4rank modules in a bank, or mixing ecc/non ecc ram

 

a actual defective ram module

 

a defective ram socket

 

bent pins on the cpu socket (only applies to cpu's with embedded ram controller)

 

also when asking for help, posting the items model information should always be done!!

 

https://www.senetic.cm/i/objects/mmo_59937826_1532678046_5341_10918.pdf

 

https://www.manualslib.com/manual/928210/Hp-Z840-Workstation.html?page=22

 

https://www.youtube.com/watch?v=Z_wf9sDUrTo

 

 

The Z840 Workstation can support various memory configurations depending on your needs and budget. In general, the system supports a maximum of 1TB with a si...
Was this reply helpful? Yes No
Graceful_Monkey
Author
Level 1
7 6 0 0
Message 3 of 9
Flag Post
HP Recommended

Hi DGroves, 

 

Thanks for the help on this, please note the following:

  • We are getting this error on a number of machines
  • We are also trying to upgrade the CPU to a 2690 V4
  • All Bios have been updated to very latest version. 
  • I'll post model info shortly. 

I have checked the following:

  1. Dimm placement is correct
  2. Ram is all ECC and not L Suffix (We have tried 3 different brands, all HP Part numbers, etc)
  3. Ram is all the Same Bank, Brand Etc
  4. I have checked the Ram into another z840 that is currently running a V4 Cpu and 2400 Ram is it all works correctly. 
  5. If I take 2400 ram from a working machine and put it into these into the machines and get the same error
  6. If I boot the machine up with a single CPU and a single 8Gb stick, the machine boots fine. 
Was this reply helpful? Yes No
Graceful_Monkey
Author
Level 1
7 6 0 0
Message 4 of 9
Flag Post
HP Recommended

In addition, if I try to boot the machine up with a single CPU and more than 1 stick of 2133 ram, we get the same error. 

I have also tried reseting the Bios using the motherboard button as per HP instructions and still no joy. 

 

Everything points towards an issue on the system that is not accepting the V4 CPU's and ANY type of ram. The only way to make it boot is with a single CPU and a single stick of ram. 

Was this reply helpful? Yes No
DGroves
Level 11
4,714 4,684 445 995
Message 5 of 9
Flag Post
HP Recommended

second time,......please post ram module information without the dimm module numbers being used it's very hard to rule this out

Was this reply helpful? Yes No
Graceful_Monkey
Author
Level 1
7 6 0 0
Message 6 of 9
Flag Post
HP Recommended

I don’t have that information to hand, but will post tomorrow.
But surely because i have tried multiple types of ram (mixture of 2133 / 2400 and 8 /16 GB sticks), all from working z840 machines (mixture of units with V3 and V4 CPU’s) then we have ascertained that it’s not because of an incorrect / mismatched dim? 

Was this reply helpful? Yes No
Graceful_Monkey
Author
Level 1
7 6 0 0
Message 7 of 9
Flag Post
HP Recommended

And to be clear, when I say “tried” I’m not mixing the ram up! This is swapping the entire set of sticks from a working machine to one of the non-working machines. 

The only way to get the “non-working” Z840’s to boot, is by having 1 stick per V4 CPU (this works regardless of 2133 or 2400 Speed). 

Was this reply helpful? Yes No
DGroves
Level 11
4,714 4,684 445 995
Message 8 of 9
Flag Post
HP Recommended

since you will not post the dimm part numbers, i'm going to end this and move on perhaps someone can still try helping you

Was this reply helpful? Yes No
Graceful_Monkey
Author
Level 1
7 6 0 0
Message 9 of 9
Flag Post
HP Recommended

Did you actually read anything that I said?

 

Was this reply helpful? Yes No
Warning Be alert for scammers posting fake support phone numbers and/or email addresses on the community. If you think you have received a fake HP Support message, please report it to us by clicking on "Flag Post".
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the Terms of Use and Rules of Participation