System takes 3 times to start up from a cold boot. XI Hero

[Phrawst]

Myself and another guy on reddit are both experiencing the same thing. When starting from a cold boot the motherboard basically cycles on and off 3 times before proceeding with the full boot.

We're both using G.Skill Trident ram.

Someone suggested turning off the memtest switch on the motherboard. My reddit buddy tried that and said it didn't work. I haven't tried that yet myself.

Any ideas?

[SpaceWizard69]

Have exactly the same issue. Quite annoying. Hey, Asus maybe you can fix it with a BIOS update?


Z390 Hero XI
G5500
STRIX 1070
G.SKILL 16GB (2 x 8GB) TridentZ Series DDR4 PC4-33000 4133MHz Memory Desktop Memory Model F4-4133C19D-16GTZC
PSU - Seasonic Prime 850W Titanium
970 Pro 512 Samsung NVME
Latest BIOS

My Original Thread:
https://rog.asus.com/forum/showthread.php?107273-Motherboard-Resets-2-3-times-before-powering-on-nor...

[SpaceWizard69]

I think this issue is being resolved by Turning "MRC Fast Boot" -> ON (Enabled) in BIOS. Search for MRC, so you can turn it ON.

However, turning Memory training off is not always a good idea. You can check a bit more info here:
https://forums.overclockers.co.uk/threads/mrc-fast-boot.18441754/

[markus_wiesioll]

SpaceWizard69 wrote:
I think this issue is being resolved by Turning "MRC Fast Boot" -> ON (Enabled) in BIOS. Search for MRC, so you can turn it ON.

Same "problem" here. Board performs up to 3 restart after starting cold.
MRC Fast boot=on makes no difference for me.

Before I found this post, I alreaedy exhanged the PSU as it looked like this is causing this issue.
So looks like this is a normal behavior for ASUS and we do not need to worry?


Board: Hero XI
CPU: 9900K
32GB G.Skill RipkawsV (2x16HB)


greetings

[XYchromosone]

markus.wiesiollek wrote:


Same "problem" here. Board performs up to 3 restart after starting cold.
MRC Fast boot=on makes no difference for me.

So looks like this is a normal behavior for ASUS and we do not need to worry?

That's right, it's normal behaviour for Z390 and possibly other chipset motherboards. It only happens from a cold start presumably because all the power has been drained from the mobo, so previous settings stored by the mobo have not been saved due to no power to the chip involved in RAM and other system settings storage. So it begins from "scratch" and tests the RAM and system for stability when doing a cold start up.

[Ch3vr0n]

It may be "normal" by Asus' standards but it's not normal by user standards. A system shouldn't do multiple reboots upon cold start. It should fire right up. There's only 2 cases where a system should do multiple boots

1) NEW system build (thus happens only ONCE)
2) BIOS updates

Anything else isn't normal.

[Ch3vr0n]

My M11F does it too, it's annoying but i'm not going to mess with the MRC fastboot. It's something asus should fix.

[phatmonkey]

You can add me to this list, double boot after powering on, Max Hero xi with an i9 9900k, 64g DDR4 Corsair LPX with XMP 1 enabled, cpu core enhancement off bios 0702.
I used to have 1 boot from cold boot with my previous Max Forumula X if XMP was enabled, but on the Hero xi it makes no difference if u default settings you get 2 boots from cold boot, everything seems to be working....

[lzeppelin]

Try also

ErP ready -> Disable

[Raigoz]

I have this same issue just now with a brand new build Maximus Hero XI with a 9700K

[Silent_Scone]

This behavior is normal and depends on the UEFI config. Certain controllers require a power cycle, as well as memory training routines to ensure stability. Moreover, if the memory overclock is unstable and unable to pass POST stress tests the system will attempt to retrain again, resulting in further power cycles.

Once memory stability has been checked correctly one can enable MRC Fast Boot to retain the last POST memory parameters in NVRAM.