We do not have a thumb drive or cd drive but he have another working computer, we plugged in the ssd to it and can access the files, can we fix an ssd(OS) with another computer.
Yeah you need to better describe the problem... can you not boot with SSD in the original PC? What brand SSD is it? What error do you get when you try to boot? Have you ran a scan on the SSD to make sure it is still good? etc...