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HP Recommended
currently I have named it expensive paperweight
Microsoft Windows 10 (64-bit)

I just purchased a Z2 G5 Tower. I did not boot it up.  I went in to replace the single 4 GB memory card it came with, with four 32 GB memory cards (M378A4G43AB2-CWE, Samsung 32GB (1x 32GB) Dual Rank x8 PC4-25600U (DDR4-3200) Unbuffered Memory).  After learning how to property seat it (Pins down, and notch in right place.  really have to push down on the card all along until both ends lock in by pushing on the memory NOT the side locks.)

I still get the 3 red blinks and long beeps followed by 2 white blinks and short beeps.

I have tried it with 1, 2, 3, 4, of the new cards as well as now with only the original card.

Any suggestions?  Thanks in advance.

HP Recommended



do you have the xeon or i7 motherboard model?


HP uses 32000 speed ram your ram is 25600 with 32000 speed on the newest module revision


i recommend you buy/try  qualified ram from crucial for your system as they will take returns if a listed part as being compatible will not work




per HP quickspecs,


1 Intel® Xeon processors can support either ECC or non-ECC memory; Intel® CoreTM only supports non ECC memory.

2 Two channels of DDR4 memory are supported.

To realize full performance at least one DIMM must be inserted into each channel.

3 Max transfer rates up to 2933 MT/s



HP Recommended



It's best to try a new system before making changes.


It would be an important shortcut to check the users' manual and decode the error beeps, but, of course, the problem is most likely the memory.  On that subject, the specification for the Z2 G5 Tower RAM is 2933 MHz , although if it's the correct spec, 3200 speed should run at 2933.  Experience with 7X  HP workstations since 2007, using only HP-labelled memory is strongly advised. There are only 2X Z2  G5 desktop systems on Passmark Performance Test baselines, having 2X 16GB, 1X 32GB, and 1X 8GB.


Is this system possibly still under warranty? 


What are the main applications for the subject system? 


Reseat all components that are in a slot; GPU's can be heavy and become dislodged in shipping.  > Run only the originally supplied 4GB module, making certain it's in the No 1 RAM slot. 


The Z2 G5 appear to have a quite high performance potential;  the top Passmark system Rating using an i7-10700K / Quadro P2200 / 16GB RAM is 6886. The i7-10700K ranks among the best single thread performance processors: Passmark = 3,091. I'll wager the user with the i7-10700K and Quadro P2200 is running Solidworks.




HP z620_2 (2017) (R7) > Xeon E5-1680 v2 (8C@ 4.3GHz) / z420 Liquid Cooling / 64GB (HP/Samsung 8X 8GB DDR3-1866 ECC registered) / Quadro P2000 5GB _ GTX 1070 Ti 8GB / HP Z Turbo Drive M.2 256GB AHCI + Samsung 970 EVO M.2 NVMe 500GB + HGST 7K6000 4TB + HP/HGST Enterprise 6TB / Focusrite Scarlett 2i4 sound interface + 2X Mackie MR824 / 825W PSU / Windows 7 Prof.’l 64-bit (HP OEM) > 2X Dell Ultrasharp U2715H (2560 X 1440)

[ Passmark Rating = 6280 / CPU rating = 17178 / 2D = 819 / 3D= 12629 / Mem = 3002 / Disk = 13751 / Single Thread Mark = 2368 [10.23.18]

HP z420_3: (2015) (R11) Xeon E5-1650 v2 (6C@ 4.3GHz) / z420 Liquid cooling / 64GB (HP/Samsung 8X 8GB DDR3-1866 ECC registered) / NVIDIA GeForce GTX 1060 6GB/ HP/LSI 9212-4i > Samsung 860 EVO 500GB + HGST 4TB / ASUS Essence STX + Logitech z2300 2.1 / 600W PSU > Windows 7 Professional 64-bit (HP OEM ) > Samsung 40" 4K

[Passmark System Rating: = 5644 / CPU = 15293 / 2D = 847 / 3D = 10953 / Mem = 2997 Disk = 4858 /Single Thread Mark = 2384 [6.27.19]

HP Recommended

Thank you for your reply, I am not sure about the motherboard model but it has the Intel® Core™ i9-10900K Processor.
Thank you for the suggestion about the memory vendor but I already have memory and would prefer to exhaust options with existing memory before considering a second purchase.

HP Recommended


Thank you for your reply.

On booting up a new computer as received BEFORE adding memory...Lesson learned!

I have decoded the LED lights/beeps error code to a memory issue...but I just cannot resolve it.

As stated in the title it's brand new...so yes it is under warranty figuring out how to navigate HP website to initiate a claim is another issue.

The main applications will be MS Office including large and multiple open MS Excel workbooks and Access databases and financial modeling software.  While this system may sound like overkill the time lost to recreate data lost with one blue screen of death or other lockup can recoup the differential cost.

Thank you.

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