I cant install windows 10 64 bit but my processor should be 64bit compatible

Oct 1, 2018
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i built a pc recently and trying to install the os (windows 10) i keep getting a crash screen with stopcode oxcoooo21a when trying to install 64bit

Specs:
intel i5 processor 8th gen 8400 lga1151
z370 aorus gaming 3
gtx1050 ti
16 gb ddr4 ram
 
How did you get the Windows ISO? Download it from Microsoft, select make ISO & select the desktop. Now download Rufus, and select your USB (or DVD), GPT/UEFI mode (not MBR/BIOS), FAT32 format & your Windows ISO. Now try installing it again.