Question I bought the gigabyte aorus x870e pro ice pairs wirh 124 gb of ram ddr5 corsair vengeance 6400

[xBON3Sx]

Whenever I go into bios and enable xmp to get the 6400 mt/s i get a black screen and error code 15. Then have to reset the pc for an hour or longer until it let's me in bios again. Pc will run fine at 4800 but anything higher and this is the issue.

 

[xBON3Sx]

Mobo is the gigabyte aorus x870e pro ice