Maximus XI Extreme need help with bios

[SK8]

Trying to understand this bios as it has been a war with it the last two weeks. First my system specs..

Case - Corsair Obsidian Series 1000D
CPU - Intel I9 - 9900K Processor
CPU Cooler - Hydro Series H150i Pro RGB 360mm Liquid CPU Cooler
Motherboard - ROG Maximus XI Extreme
RAM - DDR4 G.Skill Trident Z RGB 4266Mhz 32GB
Tested Latency 17-18-18-38
Video Card - ROG Strix OC 1080Ti OC 1708MHz
SSD's - Samsung 850 Pro X-Three-1TB
Power Supply - Corsair HX 1200i
Fans - Corsair ML120 Pro 120mm Premium x 16 (6 for CPU Cooler push pull)
Command Pro x 2
RGB Fan LED Hub x 3
Corsair LED Lighting Pro Expansion Kits x 2
Monitor - Samsung 49" CHG90 QLED Gaming Monitor 144Hrz 1ms
Win 10 Enterprise 64bit

Next my issues :
when we first built this PC we could not get into bios with a DP cable on my screen and had to use a HDMI cable this we have never seen whats the deal with this.
When I try to put it on XMP 2 and his yes I get a BSOD sorry forgot to write down the error code in windows will next time If someone needs it but it is a big pain as I lose the DP cable and have to set up HDMI again. As well as I lose my Corsair keyboard and need to hook up a old keyboard.
When I put it on XMP 2 and hit NO I make it to windows so far no BSOD but have not run stress tests yet.
This sec I have it on Bios 0805
If I get a BSOD in windows I seem to lose the DP cable on the screen and have to hook up HDMI again as well as lose my corsair keyboard
This second under boot Device Control I have everything set to UEFI only is this wrong.

I tried to set up bios as much as I could the same as I have it on my Rampage Extreme V MB as it gives me zero issues in XMP and DP cable and keyboard. And on my Rampage Extreme V MB its on a manual OC and stable but the first year I had it it was only on XMP. I have never had XMP give a BSOD until the Maximus XI Extreme. What am I not understanding on this MB with XMP lol.

This second I do feel like I have missed a bios setting or done a wrong bios setting and I am at a loss what to do as this bios is so very different then anything I have ever worked with in some respects. I tried to find basic bios settings for this MB and not finding anything so far so came for help on this site.

My husband looked up my ram and it is to run under xmp 2 but it all is making me a bit crazy and I have never had a build give me so much BS and for the first time ever really starting to hate this ROG MB. This is sad as I always loved the ROG MB until now and I hope this is just bios settings issue on my part.

Things I fully hate on this MB is going back to a HDMI cable for the screen and using old keyboard for every crash or bios update making me a bit nuts why this is and starting to think I should just junk this MB and go to a different MB to match my CPU and ram when I can afford it. But this is so not a cheep move and I do think its a setting I am doing wrong in my bios so I need some help please in making sure my Bios is set up correct as I feel like a FNG in this bios . Thank you for any help I can get.

[Phillyflyer]

SK8 wrote:
No sh.. er No kidding of so sweet we have a winner at last :} Thank you so much :] Now what ? I want to still try for 4266

Please save that bios profile....once saved...please change only the following....
dram frequency 4266mhz
dram timing...17-18-38-2N
VCCIO....1.25v
VCCSA...1.26v
Everything else will carry over from the saved profile...PC will likely double boot as part of the memory training

[SK8]

Phillyflyer wrote:
Please save that bios profile....once saved...please change only the following....
dram frequency 4266mhz
dram timing...17-18-38-2N
VCCIO....1.25v
VCCSA...1.26v
Everything else will carry over from the saved profile...PC will likely double boot as part of the memory training

ok done and testing .....

Set to Manual
Dram Frequency 4266MHz
Dram voltage 1.45v
CPU VCCIO Voltage 1.25v
CPU System Agent Voltage 1.26v
Dram timing control 17-18-18-38
Mode1
Dram command rate set to 2N set dram current capability to 130%

[Phillyflyer]

SK8 wrote:
ok done and testing .....

Set to Manual
Dram Frequency 4266MHz
Dram voltage 1.45v
CPU VCCIO Voltage 1.25v
CPU System Agent Voltage 1.26v
Dram timing control 17-18-18-38
Mode1
Dram command rate set to 2N set dram current capability to 130%

Lower the IO to 1.24v and raise the SA to 1.27v

[SK8]

Phillyflyer wrote:
Lower the IO to 1.24v and raise the SA to 1.27v

Is the pic above any help or no? Ok set and testing

Set to Manual OC
Dram Frequency 4266MHz
Dram voltage 1.45v
CPU VCCIO Voltage 1.24v
CPU System Agent Voltage 1.27v
Dram timing control 17-18-18-38
Mode1
Dram command rate set to 2N set dram current capability to 130%

[SK8]

Error at 1hr 12 min 😕 Not sure this pic can help decide what to do ,I think it can but not sure so to be safe posting it...

[SK8]

Oh my error at 1min 53 seconds

[Phillyflyer]

SK8 wrote:
Oh my error at 1min 53 seconds

With last voltage settings ??...try again..to confirm error

[Phillyflyer]

Phillyflyer wrote:
With last voltage settings ??...try again..to confirm error

Bump IO back to 1.25v and put SA to 1.27v

[SK8]

Phillyflyer wrote:
Bump IO back to 1.25v and put SA to 1.27v

Dang nab it man lol did not see this still doing second test on the 1 min error this sec its still going on 4min what was that error mm. I will try this if this one errors out. Unless you say otherwise .

[SK8]

ok not sure its at 2min now still going so far