RAM not being recognised

[Hazbob]

Hello.

I purchased 2x8GB of RAM DDR4 3200MHz. However, the computer only registers 8GB when one is in, but when two are in it registers 8.12GB. 

The second RAM slot also does no recognise any RAM stick when it's in solo. So I took both out, and placed one in the second port, didn't work. So I took it out placed it in the first port and it worked....

Any help on this would be great

[Prométhée]

hi

• Amount: 8 GB
• Speed: PC4-17000 MB/s
• Type: DDR4-2133

• Dual channel memory architecture
• Two DDR4 UDIMM (288-pin) sockets
• Supports up to PC4-17000 (DDR4-2133)

  note:

  Bridge root "4GB (1x4GB) DDR4 2400 1.2v UDIMM NECC" into root "4GB 2133MHz 1.2v DDR4 UDIMM"

  note:

  Bridge root "8GB (1x8GB) DDR4 2400 1.2v UDIMM NECC" into root "8GB 2133MHz 1.2v DDR4 UDIMM"

• Supports 4 GB and 8 GB UDIMMs
• Supports up to 4 GB on 32-bit systems

  note:

  32-bit systems cannot address a full 4.0 GB of memory.

• Supports up to 16 GB (unbuffered) on 64-bit computers

so with the original module, does it work normally or not?

https://support.hp.com/us-en/product/hp-pavilion-510-p100-desktop-pc-series/12079675/model/13327564/...

[Hazbob]

What do you mean by ,"original module"?

I placed one 8GB of RAM in one slot, it worked, took the same RAM out of that slot, and placed it in the other slot and it didn't work

[Prométhée]

"I purchased 2x8GB of RAM DDR4 3200MHz "

new

• Amount: 8 GB
• Speed: PC4-17000 MB/s
• Type: DDR4-2133

original , the one who was already inside

the ones you bought do not match the ones recommended for this motherboard!
So if it works with the original module, you have to buy back what is mentioned!
Otherwise, you may have a bad slot!

[Hazbob]

The one that came with the computer works. The new one in one slot works, if I take it out that slot and put it in the other slot it does not work