After a motherboard repair, the option to boot into manjaro has dissappeared

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Okay, so I’m sure that the 6th partition is the one with Manjaro installed on , I checked it with a partition manager on Windows, and I found the Manjaro boot-loader here :

[manjaro@manjaro efi]$ ls
 EFI   mach_kernel   System  'System Volume Information'
[manjaro@manjaro efi]$ ls EFI/Manjaro/
grubx64.efi