What brand of PC? Currently dell is shipping all its laptops and 2in1 tablet setups with the storage controller configured for Raid interface not Achi/Nvme. This keeps default windows, and i’m guessing other OS installers from finding the default ssd storage device.
The pc is old. you see the processor? is 2008 Model. In that time dont exist nvme\AHCI options. For that, this laptop is not compatible with FydeOs in last version. I recommended for this pc Linux Mint or similar