Can’t boot after enabling xmp plz help

[y0Dann]

Hi all needing some advice and some help would be much appreciated 

Pc specs - ASUS rog strix z790 h, intel i5 12600kf, amd rx7600xt, 2x16gb vengeance ram 6000mhz 

so first up if I enable xmp the computer refuses to boot even after decreasing dram frequency, ram is set up as a2/b2 and still no luck thanks in advance 

[Jiaszzz_ROG]

Hello @y0Dann 

Thank you for reaching out to us. We apologize for the delayed response due to a public holiday in our region and any inconvenience this may have caused.
Could you please confirm whether the system successfully boots into the OS after clearing CMOS, without any manual settings, including enabling XMP?
Additionally, could you provide the full part number of the memory, such as AX5U6000C4016G-CLARBK, or confirm whether the installed memory is listed in the QVL for the ROG STRIX Z790-H GAMING WIFI?
We recommend testing with a single module installed in DIMM_A2 and enabling XMP I. Once stable, then proceed to install the second module in DIMM_B2.
For information on how to query the memory QVL, please refer to the [Motherboard] How to query (CPU/memory) QVL List? guide, and for details on memory overclocking, you may visit the Memory Kits - Overclocking and What You May Not Know thread.

Thank you.