Urgent help needed please! ASRock x370 mb Ryzen 7 1700x CPU Upgrade to Ryzen 9 5950x

I’m preparing my bosses computer for updating to Windows 11 on an ASRock x370 Taichi Motherboard with a Ryzen 7 1700x CPU… The CPU failed Windows 11 health Check as unsupported so I have a Ryzen 9 5950x arriving sometime today since it was on the approved lists for the Motherboard as well as the Windows 11 approved list… In the meantime I’ve been trying to address the other issues which were the MBR needing to be converted to GPT, the TPM Module 2.0 needing to be recognized, Secure Boot needing to be enabled & the BIOS flashed to the point to support the Ryzen 9 5950x.. I got the BIOS updated from 3.0 to 7.3 which supports the Ryzen 9, I got the TPM 2.0 recognized & I got the C:/ drive which is on SSD Disk 1 converted to GPT but the major issue I’ve just discovered is that there is a HDD as Disk 0 and somehow the System Reserved Partition is on the HDD and not the SSD which has Windows 10 and all of the programs & software used to operate the CNC machine on it… I thought maybe I could just leave it screwed up like that & convert that HDD to GPT hoping that would allow me to change the BIOS from Legacy to UEFI & keep moving forward but I couldn’t convert it because their is no boot on the HDD. So somehow the System Reserved Partition got put onto the wrong drive originally & I don’t want to make a wrong move & screw everything up in a big way.. Please I’m hoping one of the experts here can tell me to take a deep breath & it’s going to be a simple fix! I have EaseUs Partition Master Pro to work with, what are the correct steps to take from this point to get this sorted out? Thank you so much in advance for any help