Hi everyone,
 
I am running into a boot loop when I try to enable the XMP profile(s) for my RAM or adjust the RAM speeds from the defaults. The computer boots just fine with the default RAM speed, but as soon as I edit it, I get the boot loop.
The RAM is compatible with the motherboard and is on the QVL list. 
 
RAM - G.Skill Trident Z RGB (F4-3733C17Q-32GTZR)
CPU - i7-8700K
 
I haven't been able to find any solutions online so I figured I would post here and see if anyone could help. 
 
Thanks in advance!

Sajin
So it boot loops even when you set everything up manually?

Technically yes.
I get the boot loop 100% of the time when I enable the XMP Profile(s) and the only way to get the computer to boot is to reset CMOS.

If I manually change the RAM speed the result I get varies between going into the boot loop or booting back into BIOS, which has the default speeds.

Also, I was thinking about it and I don’t think boot loop is the correct term for what is going. I want to say it is more so that my PC won’t POST.

It hangs near the end of the boot process and displays the POST Codes in the video link below.




Sorry for the confusion.

Thanks!

Don't know if your BIOS has these settings like my ASUS (Z370) board does, but see if there's a setting in the DRAM timing control section for enabling "MRC Fast Boot", or Fast MRC or Memory Remap..Try disabling MCH Full Check..Might also try turning on Fast Boot/Super Fast Boot if that's an option in the Boot settings..Change the RAM Command Rate (tCMD) to 2N or 3N, not at 1N for now.
 
My RAM works fine at the SPD speed of 2133MHz but refuses to pass POST at the Rated/X.M.P. speed of 4133MHz unless "MRC Fast Boot" is enabled, then boom!..No problemo..Passes POST in 5 seconds and work perfectly.
 
Your Z370 has an AMI BIOS too, so maybe "MRC Fast Boot" (or something similar to that) is stashed all the way at the bottom of the DRAM timing control settings like mine, but then again, maybe not.
 
Just a thought here..Good luck with it.