So I can still get to manjaro but it will default to windows so I thought “Fine I’ll just bcdedit /set {bootmgr} path \EFI\manjaro\grubx64.efi again” and so i did and got “A device which does not exist was specified.” and I’m not sure what to do. Sure its not that bad i just need to hit f11 every boot if i want to go manjaro but i want to be able to select windows from grub again like i had when windows was on the hard drive but grub still thinks windows is on the hard drive even after i formated that drive. its empty no files. I made sure of that. (formated it) If any one could advise what i need to do that would be wonderfull 
specs:
CPU
Intel(R) Core(TM) i7-9700K CPU @ 3.60GHz
Base speed: 3,60 GHz
Sockets: 1
Cores: 8
Logical processors: 8
Virtualization: Enabled
L1 cache: 512 KB
L2 cache: 2,0 MB
L3 cache: 12,0 MB
Memory
16,0 GB
Speed: 2400 MHz
Slots used: 2 of 4
Form factor: DIMM
Hardware reserved: 61,5 MB
GPU 0
NVIDIA GeForce RTX 3070
Driver version: 30.0.14.7196
Driver date: 2021/08/27
DirectX version: 12 (FL 12.1)
Physical location: PCI bus 1, device 0, function 0