IT stuff and SSDs with machine tools
With very high probability your problem is related to drive file formats,
especifically drive type descriptors in the boot sector loader.
Back in the day removable drives had specific codes and max sizes and boot descriptors.
Std windows tools cannot see or change them, some very few specialist windowz sw can.
Freeware linux based utilities will fix this in 5 minutes.
You download the linux utility onto a usb memory stick, then boot from the usb, and with a simple text/graphical interface you assign the file format on the ssd to something friendly, and make the ssb boot loader say bootable with a suitable partition system and bootloader.
Offhand I don´t remember the name of the linux utility I last used.
With complex cf/solid state drives on hp mini desktops.
Just change the drive type descriptor, then make the partition bootable and active, voila.
Very long story how and why and what drive systems / boot sector loaders / etc.
Mostly-all custom systems will boot from anything as long as the bios thinks it sees it and the MBR master boot record is in sync with the filetype-descriptor on the hard drive hw.
If you need real-time help, I can do that, via zoom etc.
Pm to agree.
I would expect normal rates for work, but with zero down and no-cure no-pay.
It would probably take 2-3 hours to solve, if it is the typical complex maze that these things were when I did this daily.
I´m happy to guide for free.