Pls help: Z690 extreme, new memory, long boot time.

[Crasje]

Hello,

I have the Z690 and upgraded from 2 x 16GB (5600Mhz) to 2 x 32GB (6000mhz). I don't have XMP enabled (auto).

But with the new memory, it takes a LONG time to boot, minutes even. It looks like there is some memory activity going on. Eventually I get in and I see my memory (all 64GB), no errors in the device manager.

Does anyone have any idea what is causing this and how I can remedy it.

[Silent_Scone]

Hello,

Can you confirm if you mean boot times after Windows has completed POST procedures or the time it takes before you get a display signal?

[Crasje]

Before, it takes 5 minutues before the post shows up and the PC starts up.

[Silent_Scone]

Enable Fastboot within the UEFI. POST stress tests can take a few moments on initial boot. Fastboot will retain the last successful memory training. 5 minutes sounds more like an issue with handing off to the OS. Remove any USB devices from the rear I/O and see if this helps also.

Might be worth taking a video and uploading here.

[Crasje]

I think I have it turned on. But I will check (going into the bios will take 2 x 5 minutes to get back into my PC).

For your information, my Z690 display says Detect memory and I see codes like, 31, 34, 35, 7a, 3e, 6e, 28, 0d, 79.

then it goes to CPU and I see 00, 18, 25, 27

These are not all the codes that go by and this repeats  several times or so. I did perform a memory test yesterday and stopped after an hour or so since once in windows I have no issue.

Such a pain, all i wanted to do was get from 32 to 64GB, first tried 4 x16 by adding 2 similar memory corsair dominator modules, which didn't work well and looking the internet I send them back and order 2 x 32GB corsair dominator. 

[Silent_Scone]

Sounds like it's failing memory training. At this point, the system will reattempt until POST is successful or enter failsafe mode. This will occur if the applied memory settings are unstable.

Can you confirm if this behaviour occurs if you clear the UEFI via the rear I/O and don't adjust any parameters (no adjustments at all in UEFI, including no XMP or overclocking)?

You can also run Memtest86+ from the Tools menu within the UEFI and check for a pass fail.

[Crasje]

How do I clear the UEFI via the rear IO?

[Crasje]

Is it the button next to the clear CMOS button? Does my PC has to be off when I press it? or in Windows?

[Silent_Scone]

The clear CMOS button is the green ring on the rear I/O. The system should be off with power connected.
Once this is pressed power up and retest for the same behaviour. At optimised defaults, we can rule out overclocking instability.

[Crasje]

I am now going to take pictures of my BIOS so I can reconfigure everything (i am far from a wizard in the bios and am SO afraid I will 'break' something I can't fix after the reset).

But I have NO overclocking going on, not on my memory, not my CPU and not my GPU.