Lenovo M90p Xeon Support + Question

[bmb021]

I’m sorry, I’m not familiar with the process.
According to post, https://www.bios-mods.com/forum/Thread-L...t-Question
The latest Lenovo BIOS should support Xeon.
I’ve upgraded to the latest Lenovo BIOS, selected defaults in the BIOS setup, powered off, replaced I5-560 with X3450, installed PCIe GPU and powered it on.
I’ve got black screen.
So, I assumed there is a modded BIOS.

[DeathBringer]

Post a screenshot of Mainboard tab of CPU-Z.

[bmb021]

Post a screenshot of Mainboard tab of CPU-Z.

Here it is

[DeathBringer]

What is your PCIe GPU?
Can you boot with i5-650 and this graphics card?
Did you check your X3450 with other system?

[bmb021]

What is your PCIe GPU?
I've tried 2: GT710, GT610 - all tested ok on other system

Can you boot with i5-650 and this graphics card?
Yes

Did you check your X3450 with other system?
Yes. I have few X3450 and X3460, all tested ok

All hardware including Xeons was tested on Intel DH55PJ
https://www.intel.com/content/dam/doc/pr...-brief.pdf

[DeathBringer]

1. Install i5-650, supported graphics card and one DIMM only.
2. Do Load Defaults in BIOS, save and reboot.
3. Boot in Windows.
4. Make TXT-report of CPU-Z, zip it and attach to this topic.
5. Power off.
6. Replace i5-650 with Xeon.
7. Try to boot.

[bmb021]

Why only one DIMM?
The RAM was tested – it’s fine.
It has 4x2G DIMMs, which is the max official capacity according to Lenovo.
It won’t boot Win on a single 2G stick.

[DeathBringer]

It won’t boot Win on a single 2G stick.

It's strange. Try one only in other slots.

[bmb021]

Not really, it has Win11. I should have a 4G stick somewhere.
I'll try it with 4G and let you know.
Can you explain the significance of one stick vs. 4?
Its not like it has any influence on BIOS to recognize Xeon.

[bmb021]

It won’t boot Win on a single 2G stick.

It's strange. Try one only in other slots.

Didn't find 4G. Used 2x2G. Log attached
Xeon still doesn't work