Existing Windows 11 not booting

After buying an extra SSD I decided to dual boot my PC with one SSD being Windows 11 and another being Linux Ubuntu.

Recently I decided to get rid of my Linux drive by cleaning it on DISKPART but after doing so now my Windows 11 drive is not booting or showing up on BIOS, I installed another Windows 11 on my previous Linux drive, booted it up and checked the drives, everything is there and showing up but the drive letters are out of place and scrambled. I can't change the original windows 11 drive letter back to C.
On Disk Management the old Windows 11 drive doesn't have an EFI partition, that might be the problem but I'm not sure.
Could the problem be something else?

Any help with this matter would be highly appreciated.
Many thanks in advance.