Well can you help me with what actions and steps should I take and take care of while adding the gpu. I have a gt 730 with my friend and will try that tomorrow.
the gt 730 is low power and low requirements, it will work, of course, just as the 1030
the doubt is the 1050ti, if the bios will accept it and the pci express slot will deliver the 70 watts it asks when under load
as i said, i would buy the 1050ti, the pc will not melt, if psu is not enough it will just not turn on or will turn itself off under load, that will tell you the psu is not enough, as you mention, you know it can be done, so don't ask here if it can be done because you already know it can be done, people here will recomend you not to do it, so you don't have a possible bad surprise and kill parts, is fear of unknown, but as mentioned before, it has been done in the past, alot
keep in mind that you proceed at your own risk, but as you said it ha been done, and the sff gpus are meant for this specific use
to be sure, the gt 1030 gddr5 2gbs will work, i have one here and i know it uses very little power, it will work, if the bios accepts it, of course
the 1050ti is what i would buy if you ask me