Can't load windows after dual booting with Manjaro

I dual booted manjaro KDE into my Razer blade 15 2021 advanced model. Windows had already created a efi boot partition of 100Mib already, So I mounted into that using /boot/efi. But I cant boot into windows now. It shows up in my grub, and once I select it, it crashes with the blue screen and error message.
Also my nvme drive is also not recognised in bios. Manjaro loads fine.
os-prob is not disabled and fdisk -l shows all my partitions properly.

Any help on this is much appreciated.

You might have to repair the Windows bootloader using the Windows ISO, then reinstall the Manjaro bootloader.

That is what I do on my dual boot computers and never had an issue.