Help, all my NVMe not display at format step

[cucumi]

Hi all, i need some help here. I'm using ROG STRIX Z790-E GAMING WIFI II, in Bios all my NVMe display well but when i want to format the Windows none off my NVMe display.

Any help please?

[cucumi]

Anyone?

[Jiaszzz_ROG]

Hello @cucumi 

Thank you for reaching out to us, and apologize for the delayed response.
If you need to reset Windows, please refer to [Windows 11/10] How to Reset (Reinstall) the Operating System.
If you need to format your SSD, you can refer to How to Format a Solid State Drive (SSD).

Thank you.

[cucumi]

Thanks, but not solved the problem.

Need to disable VMD Controller, after that my NVMe appear.

[achugh]

Hi @cucumi now that you have disabled VMD Controller and all your drives are appearing, can you please post a screenshot of how the Boot Menu looks? Thank you.

[cucumi]

[cucumi]

Another question.

I buy F5-6400J3239F48GX2-TZ5RK , total 192GB. When i put 4 unit and enable XMP or enable RAM speed manually to
6400 MT/s, my PC not able to boot or login into Windows.

What is maximum speed actually support by ROG STRIX Z790-E GAMING WIFI II?

From tech spec said up to 4 x DIMM slots, max. 192GB DDR5 8000+(OC)/7800+(OC)

[Jiaszzz_ROG]

Hello @cucumi 

According to the F5-6400J3239F48GX2-TZ5RK spec and the ROG STRIX Z790-E GAMING WIFI II memory QVL, the model is a 2-module kit.

The purchasing and installation guide notes the following:

Ensure that all memory modules are from the same validated memory kit. Do not mix DIMMs from different memory kits—even if they are the same brand and model (e.g., two DIMMs each from two different memory kits). Mixing and matching DIMMs can result in a failure to boot and compatibility issues. In particular, the stability of a system with mixed DIMMs cannot be guaranteed when XMP (Intel)/D.O.C.P (AMD)/EXPO (AMD)/AEMP/AEMPII is enabled. For example, enabling XMP (Intel)/D.O.C.P (AMD)/EXPO (AMD)/AEMP/AEMPII to speeds above DDR5 4800MHz or above DDR4 3200MHz could result in an unstable system.

Therefore, we recommend following the above suggestions and referring to the [Motherboard] How to query (CPU/memory) QVL List? as well as the users manual for memory installation.

For details on memory overclocking settings, please refer to "Memory Kits - Overclocking and What You May Not Know."

Thank you.

[cucumi]

Right now i used 4x48GB and set speed to 4800 MT/s, otherwise windows not able to boot.

So nothing we can do right?

[achugh]

Hi @cucumi , 

You can read https://rog-forum.asus.com/t5/technologies-explained/memory-kits-overclocking-and-what-you-may-not-k... page and definitely watch the YouTube video link in the only comment. When you watch this video you will learn what is happening.

In very short summary, your advertised memory speed is only rated when just 2 sticks are used. This is why the kit does not have more than two in it. Secondly, when you add more than 2 sticks, the memory controlled in your CPU has to do more work and this reduces the speed. On top of it, if the memory is too big like your situation of maxing out the board, it will further reduce the rated speed.

Now, to answer your question on what you can do. You can find a new memory kit that has the capacity you need in a single package so you do not have to mix and match like you are doing right now by using 2 kits. That single package may run slightly higher than your current state. You can also continue to manually adjust the various memory options in the BIOS, if you are really very advanced and understands what they are and how to modify them.

As you can see from my signature, I am also using a maxed out memory setup. In my case, I bought the kit that comes with 192GB in one package and my speed is limited to 5200MT/s. So even if you are able to manually adjust things, I doubt you will be able to gain much speed.

All of this is well explained in the YouTube video link.

I hope this information helps your proceed forward.