New RAM not recognised

[Thomas_crowther]

I've tried to upgrade the RAM in this machine from 2x4G to 2x8G modules. 

Upon powering up I get 3 low and 2 high beeps and it won't post.

I have tried each module singly in each slot.

I have ensured the main board can accept total of 16G and they are if the correct specification.

The old original RAM still works fine when I reinsert them.

If I put one of the old sticks and one of the new sticks, the new stick is completely ignored. 

This has led me to believe I have purchased some faulty modules. 

Unless there is something I need to do in BIOS before changing RAM or have to set a jumper that I'm unaware of.

I have already set up bios to allow legacy devices (or whatever it was) to allow a display adapter upgrade.

Any help most welcome 

Thanks.

[Thomas_crowther]

I have tried a different set of 8G sticks and they are not working either. Surely I can't have two sets of dead sticks. 

They are allegedly compatible according to the documents on line. This has been confirmed by the vendor of the RAM.

So what else could it be?

[KrazyToad]

@Thomas_crowther

Welcome to HP Community

I have gone through your Post and would like to help

Are both the RAMs of the same Frequency?

You can refer to this Link: https://support.hp.com/in-en/product/hp-pavilion-550-100-desktop-pc-series/8499648/model/9062677/doc...

Thank you

If the information I've provided was helpful, give us some reinforcement by clicking the "Solution Accepted" on this Post and it will also help other community members with similar issue.
 

[Thomas_crowther]

Yes I believe so. The new RAM is certainly advertised as such.

The Kingston sticks are KCP316ND8/8 DDR3 1600MHz non ECC

And the other pair are

XUM DX8GDDR3U1600

8GB 2Rx8 DDR3 PC3-12800U - 1600MHz

[KrazyToad]

@Thomas_crowther

I suggest you install the old RAMs and boot up the Notebook. Then update the BIOS. Link: https://support.hp.com/us-en/drivers

Next try installing the new RAMs

[Thomas_crowther]

Thanks for the continued help..

I have updated the BIOS and still have the same problem.

The HP Pavilion 550-153na is a desktop machine.

There were multiple (6) BIOS updates to choose from at https://support.hp.com/gb-en/drivers/selfservice/hp-pavilion-550-100-desktop-pc-series/8499648/model...

I have tried them all. Some say they are not compatible and do not allow me to continue.  At least one of the others appeared to do something, one or two others report that current version is newer than update.

[Thomas_crowther]

My current BIOS version according to System Info is "AMI A0.18, 07/10/2016"

[KrazyToad]

@Thomas_crowther

Thanks for keeping me posted

At this point I suggest you contact HP Support in your Region for further assistance

1) Click on this link - www.hp.com/contacthp/ 
2) Select your product type below.
3) Enter the serial of your device. 
4) Select the country from the drop-down. 
5) Select the chat or get phone number options based on your preferences. 
6) Fill the web-form and proceed further.
 

Thank you

[Thomas_crowther]

Thanks for trying. Appreciate it.

[KrazyToad]

☺️