Ram upgrade issue

[Linux588]

Hi guys I need help with a Zbook15 workstation laptop. Its a good laptop for what I need and it has 8GB

of RAM. I see 2 slots empty for RAM in the back and I found 2 4GB sticks in a drawer. I installed the 2 sticks

of RAM however my bios and my OS does not detect the RAM upgrade. Any idea on what I can do to

get the system to recogize it ? Or do I nerd to buy a  specific  RAM which it says in bios Samsung 1366mhz.

Thanks.

[NonSequitur777 · Accepted solution]

@Linux588,

Welcome to our HP User Forum!

Your HP ZBook 15 Mobile Workstation, according to: https://www.crucial.com/compatible-upgrade-for/hp---compaq/hp-zbook-15-mobile-workstation, and: https://support.hp.com/us-en/document/c03934138, can be upgraded up to 2 x 8GB of DDR3/DDR3L PC3-12800, 1600 MHz, Non-ECC, Unbuffered, 1.35V, SODIMM, 204-pin RAM sticks.

What is/are the part number(s) of the RAM sticks you tried to make work?

Kind Regards,

NonSequitur777

[Linux588]

The sticks I used are from another laptop and are different. I will look into just adding 4GB more then since money is a bit tight but I figure 12 gigs will help me a lot with what I want to do. I just need to upgrade my hard drive from 500GB

to a TB.

[banhien]

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@Linux588 wrote:

 I see 2 slots empty for RAM in the back and I found 2 4GB sticks in a drawer.

---

@Linux588 

What are they ? Are they compatible RAM ?

Regards.

[NonSequitur777]

@banhien,

That is exactly what I was trying to ascertain, quote: "What is/are the part number(s) of the RAM sticks you tried to make work?"

Kind Regards,

NonSequitur777

[Linux588]

I ordered just 1 4GB stick and I still have a 4th slot empty but I doubt I need more than 12

for what I wanna do. The i7 on this workstation is just enough juice for the setup I need running

multiple OS's on a virtualbox.